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All Journal JURNAL ILMU PERTANIAN Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) JURNAL PENELITIAN SAINTIKA Jurnal Kimia dan Kemasan JURNAL PENGABDIAN KEPADA MASYARAKAT PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman Jurnal Pendidikan Kimia Universitas Riau Lantanida Journal Journal of Applied Geospatial Information Jurnal Pendidikan Kimia (JPKim) Martabe : Jurnal Pengabdian Kepada Masyarakat Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Riset Teknologi Industri Eduproxima : Jurnal Ilmiah Pendidikan IPA Indonesian Journal of Chemical Science and Technology Jurnal Siliwangi: Seri Pendidikan Jurnal Kimia dan Kemasan CHEDS: Journal of Chemistry, Education, and Science Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Natural EINSTEIN (E-JOURNAL) Chimica Didactica Acta : Journal of Chemistry and Chemistry Education al Kimiya : Jurnal Ilmu Kimia dan Terapan

Eddiyanto Eddiyanto

Universitas Negeri Medan

Author-ID : 6448978

Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Social Sciences Other

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Study on the thermal properties of the grafted product of maleic anhydride onto clylized natural rubber by using thermogravimetric method M. Said Siregar; Dian Arsita Fitri; Muhammad Iqbal Nusa; Desi Ardilla; Masyura M.D; Asmarasari Nasution; Eddiyanto Eddiyanto
Jurnal Pendidikan Kimia (JPKim) Vol 14, No 1 (2022): April
Publisher : Pascasarjana Universitas Negeri Medan

This study aims to investigate the thermal properties of grafted products of maleic anhydride onto cyclized natural rubber. The grafting was carried out in the melt phase at an internal mixer of 150 oC and a rotor speed of 80 rpm. A total of 16 phr maleic anhydride was reacted with cyclized natural rubber in the present and absence of divinylbenzene comonomer with various mole ratios: 0.5, 1, and 2. The grafted products were characterized by the thermogravimetric method to investigate their thermal properties. Based on the results of the thermogravimetric analysis, it was shown that the sample increased its thermal stability. The sample decomposes at a higher temperature with the increasing mole ratio of divinylbenzene added. The grafted product with 16 phr maleic anhydride decomposed at 489.41 oC. Then, the graft product samples with the addition of 0.5, 1, and the 2-mole ratio of divinylbenzene comonomers decomposed at: 501.62 oC, 514.39 oC, and 520.82 oC, respectively.Keywords:Cyclized natural rubber, Divinylbenzene, Maleic anhydride, Thermamogravimetric

ANALISIS DAN PENGEMBANGAN BUKU AJAR KIMIA KELAS X SEMESTER I SMK FARMASI SESUAI KTS Boni Mariska Ratnawati; Ramlan Silaban; Eddiyanto Eddiyanto
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 1 (2014): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This research aims to (1) Analyze the chemistry handbooks used in the vocational school of Pharmacy in North Sumatra, (2) Develop a sequence of chemical material suitable to grade X semester I and systematically according to KTSP of Pharmacy Vocational School, (3) Knowing what chemical materials worth and the right to be taught in Pharmacy vocational school grade X semester I so that learning is more systematic and easily understood by BSNP students in learning, (4) Developing the chemistry handbook for grade X semester I Pharmacy Vocational School appropriate with KTSP, and (5) Knowing the opinion of teachers of chemistry at Pharmacy Vocational School on the development of standard chemistry handbook of grade X semester I. Sample in this study are two publishers of chemistry handbooks used in grade X semester I of the most widely used in Pharmacy Vocational School in North Sumatera, has graduated from the book center, and marketed nationally and four vocational school chemistry teacher used grade X Pharmaceuticals as a respondent and has teaching experience in grade X Pharmacy Vocational School for a minimum of two years and a minimum education is bachelor degree (S1). This is a research development using qualitative data described by using the time sentence by emphasizing the documentary technique. This research instrument is a questionnaire with a book containing sheets of the feasibility of the indicators derived from the assessment of National Education Standards Agency (BSNP) in 2006, later identified occurrence for each book. Furthermore it is developing chemistry handbook for grade X semester I Pharmaceuticals appropriate vocational curriculum, which will be assessed by the respondent chemistry teachers of Pharmacy Vocational School. The assessment results of validation between the average range to determine whether or not worthy of the book used in grade X semester I of Pharmacy Vocational School. The results of the feasibility analysis of the contents of the handbooks most widely used chemical in the first semester of the grade X is obtained percentage Pharmacy Vocational School: books A, and B are, respectively 51.89% and 76.01%. Validation range obtained in the proposed grade X semester I of chemical materials Pharmacy Vocational School is 3.6 means that the proposal put forward appropriate materials are used in the development of chemistry handbooks for grade X semester I Pharmacy Vocational School. Assessment chemistry handbook for grade X semester I Pharmacy Vocational School on the feasibility of content, language, and presentation by chemistry teacher of Pharmacy Vocational School respondents obtained an average yield of the range of validation in order are 3,31; 3,52, and 3,51. Validation of the overall range obtained from the four respondents chemistry teacher of Pharmacy Vocational School is 3.45, this means that the Chemistry Handbook for Grade X Semester I Pharmacy Vocational School According With KTSP is valid and does not need to be revised again and have been feasible to use in chemistry learning in Pharmacy Vocational School.Keywords: Chemistry Handbook, Pharmacy Vocational School, Analysis, Development, KTSP

The Development of Innovative Colloidal Chemistry Teaching Module for XI Class of Senior High School Based on Project Based Learning Leny Novita; Eddiyanto Eddiyanto; Manihar Situmorang
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 3 (2016): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. The development paradigm of the potential of human resources resulted in demands in all areas, not just the quality of human resources, but human character itself. Learning innovations incorporated into textbooks is expected to improve the quality of education and develop the character of the nation's generation. This research aims to develop an innovative high school chemistry textbook/MA XI for second half class based on the 2013 curriculum standards that are used to create a creative learning, effective, and fun, and help learners gain optimal learning results. The population is all high schools in North Sumatra. The sample in this study were taken by purposive sampling, namely SMA Hang Tuah Belawan, SMAN 9 Medan and SMAN 19 Medan each as much as 2 classes. Experiment and Control Class. Data were analyzed by using independent sample t-test with SPSS 20 for windows at significance levela=0.05. Results showed that innovative chemistry textbook has been successfully developed into a complete teaching materials and interactive learning relevant to the subject matter on the chemistry and sub subject in the innovative textbook of the development results. Innovative textbook can be used to study the original teacher centered learning was transformed into a student centered learning.Keywords: textbook of chemistry, curriculum 2013, the PjBL model, high school

Inovasi Buku Ajar Kimia SMA/MA Kelas XI Semester Ganjil Terinternalisasi Nilai-Nilai Karakter Siswa Riska Ritonga; Ajat Sudrajat; Eddiyanto Eddiyanto
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 3 (2016): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This study aims to determine: (1) Test the feasibility of High School Class XI textbook commercially complies with the standards BSNP; (2) Test the feasibility of textbook by validators to high school chemistry textbook/ MA first semester of classes XI developed in accordance with the standards BSNP; (3) Test the feasibility of textbook by validators to high school chemistry textbook/ MA Class XI the first semester have developed internalized the values of the character of the students; (4) Test the feasibility of textbook by students of the high school chemistry textbook/ MA class XI semester of internalized character values of students; (5) Improved student learning outcomes after studying with a high school chemistry textbook/ MA class XI semester of internalized character values of students; (6) The results of studying chemistry student using high school chemistry textbook / MA class XI semester of internalized character values of students better than the minimum completeness criteria. The entire sample was selected by purposive sampling. Samples were determined in this study are (1) high school chemistry book/ MA Class XI outstanding as much as four books; (2) Teachers chemistry with the criteria of formal education bachelor and experienced teaching in schools as many as 10 people, chemistry lecturer criteria have minimal formal education postgraduate were 3 people; (3) A Class XI Sains-treated using a textbook teaching high school chemistry/ MA class XI half of Odd internalized character values of students based on curriculum 2013. Based on test data analysis, the results showed that (1) Test the feasibility of commercially textbooks valid criteria and should be revised; (2) Test the feasibility of the validator against chemical textbook produced in this study meet the standards required by the National Education Standards. (2) and (3) test the feasibility of the validator and students to the textbook internalized character values of students in this study meet the standard of assessment rubrics character values developed. (4) Improved student learning outcomes using chemistry textbook produced in this study is of 0.69 which is average. (5) Based on data obtained learning outcomes sign value <0.05 (0.011 <0.05) the use of high school chemistry textbook/ MA class XI half of Odd internalized the values of the student's character better than the the minimum completeness criteria.Keywords: Buku ajar kimia, terinternalisasi nilai-nilai karakter siswa

Pengembangan Materi Ajar Kimia Larutan Penyangga yang Interaktif Untuk Siswa SMA Putri Rosida; Mahmud Mahmud; Eddiyanto Eddiyanto
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 3 (2015): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This study aims to obtain web-based interactive chemicals teaching materials. Form of research is a descriptive study. This type of research, including research and development. Subject is basic teaching materials buffer solution. The sample used in this study consisted of 20 chemistry teachers in class XI in Medan, 2 chemistry lecturers, general chemistry lecturer and a media lecturer of Universitas Negeri Medan, and 80 students. The selection of the sample in the study using purposive sampling technique. The results of the analysis based on stadart content, competence and indicator obtained, feasibility aspects of the content of 4.42 is very valid, it means very feasible and does not need to be revised, the feasibility of presenting 4.13 is valid, it means feasible and does not need to be revised. Teaching materials that have been developed then tested to students. Testing of students using two classes, experimental and control classes. Towards the experimental class students are given a developed web-based interactive chemistry teaching materials, while the control class using teaching materials that it carries. Based on test results obtained improvement of learning outcomes (gain) experimental grade students (68.25%) is higher than the increase in learning outcomes (gain) control class (61.36%). Keyword: interactive chemistry teaching materials, web, research and development (R&D), buffer solution

Biodegradable plastic modification from durian seed starch and shrimp chitosan with the addition of plasticiziers glycerol and polyglycerol using microwaves Saud Salomo; Astri Devi Br Pakpahan; Dea Gracella Siagian; Grecy Kristina Tampubolon; Salsabila Afani; Eddiyanto Eddiyanto; Junifa Layla Sihombing
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

Plastic waste takes up to 450 years to decompose. These problems can be overcome by creating other alternatives, one of which is by using biodegradable plastic. Biodegradable plastics are plastics made from natural polymers that are easily degraded by microorganisms. This study aims to examine the effect of the amount of plasticizer on the length of the degradation process and the effect of using microwaves on the length of time for molding biodegradable plastic. This biodegradable plastic is made by combining durian seed starch, shrimp chitosan and plasticizers in the form of glycerol and polyglycerol with volume variations of 1 mL, 2 mL, 3 mL, 4 mL, and 5 mL. This polymerization was carried out using a microwave with a power of 100 watts for 60 minutes. The resulting biodegradable plastics were characterized using the FTIR test, the Mechanical Properties test, the Absorbency test, and the Biodegradation test to determine the quality of the biodegradable plastic. The results of this study indicate the greatest tensile strength value is 1.9768 MPa, the largest elongation value is 21.2772%, the smallest water absorption is 45.40% for 5 minutes, and the largest degraded mass is 0.908 grams for 7 days. Based on this research, it can be concluded that the use of polyglycerol can accelerate the plastic degradation process. In addition, the use of microwaves can speed up the molding time of biodegradable plastics.Keywords: Biodegradable plastic, Durian seed starch, Shrimp chitosan, Glycerol, Microwaves

Potensi Kandungan Zat Lilin Daun Pisang sebagai Spray Anti Air Ahmad Ramadhan; Dian Wardana; Rizka Alfi Fadhilah; Eddiyanto Eddiyanto
Jurnal Sains dan Terapan Kimia Vol 14, No 1 (2020)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Kondisi cuaca yang tidak menentu seperti hujan mengakibatkan beberapa masalah yang dapat mengganggu aktivitas sehari-hari. Pelindung air saat ini memiliki bentuk yang sulit untuk dibawa. Tumbuhan pisang yang banyak terdapat di Indonesia memiliki potensi dalam menangani permasalahan tersebut. Zat lilin yang terkandung didalam daun pisang menyebabkan daun pisang bersifat anti air. Penelitian ini bertujuan untuk mamanfaatkan zat lilin daun pisang tersebut sebagai bahan anti air yang dapat dikemas dalam bentuk spray anti air sehingga mudah dibawa. Proses kerja yang dilakukan adalah mengekstraksi zat lilin daun pisang kering dengan pelarut n-heksana, etil asetat, dan etanol 96%. Setelah itu, zat lilin diisolasi dari ekstrak dengan pendinginan. Rendemen tertinggi dari zat lilin yang dihasilkan selanjutnya diformulasi dengan n-heksana dengan cara pelarutan pada berbagai jumlah zat lilin yang digunakan dan kemudian diuji. Hasil pengisolasian zat lilin daun pisang dengan berbagai pelarut menghasilkan rendemen tertinggi yaitu sebesar 1,46 % pada penggunaan n-heksana. Pengujian terhadap spray anti air yang dihasilkan menunjukan bahwa penggunaan 3 gram zat lilin dalam spray anti air mampu bersifat anti air dengan massa air yang terserap pada kain terendah yaitu sebesar 0,64 %. Pasca penyemprotan, kondisi optimum untuk waktu pengeringan adalah 180 sekon dengan % massa air yang terserap pada kain sebesar 0,65 % dan waktu bertahan untuk tetap bersifat anti air adalah lebih dari 30 menit.

Pencangkokan Anhidrida Maleat Pada Karet Alam Siklis : Penambahan Divinil Benzen untuk Meningkatkan Derajat Pencangkokan M. Said Siregar; Reni Puji Astuti; Misril Fuadi; Desi Ardilla; Masyura M.D; Asmarasari Nasution; Eddiyanto Eddiyanto
Jurnal Riset Teknologi Industri Vol.15 No.2 Desember 2021
Publisher : Balai Riset dan Standardisasi Industri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26578/jrti.v15i2.6973

Derajat pencangkokan anhidridamaleatpadakaretalamsiklissecara umum masih rendah, yang disebabkankurangnyadensitaselektronikatanrangkapanhidridamaleatsehinggareaktifitasnya rendah. Penelitian ini bertujuan untuk meningkatkanderajatpencangkokan denganpenambahan komonomer divinil benzen. Pada penelitian ini dilakukan penambahan anhidrida maleat 2, 4, 8 dan16 phr dengandan tanpa komonomer divinil benzen di dalampencampur internal suhu 150oC dan kecepatan rotor80 rpm. Untuk mempelajari pengaruhpenambahankomonomerdivinilbenzenmakaditambahkananhidridamaleat 16 phrdankomonomer divinil benzen dengan variasimasing-masing: 0,5, 1 dan 2 rasiomol. Produk pencangkokan dikarakterisasidenganfourier transform infra red untuk melihatterjadinyapencangkokananhidridamaleatpadakaretalamsiklis. Kemudian derajat pencangkokan ditentukan dengan metode titrasi menggunakan NaOH 0,05 M. Dari spektrum FT-IR dapatdilihatbahwatelahterjadipencangkokananhidridamaleatpadakaretalamsiklisdenganadanyaserapankhaspadabilangangelombang 1780cm-1. Dari perhitunganhasiltitrasidiperolehbahwaderajatpencangkokanmeningkatdenganpenambahandivinilbenzen.Denganpenambahandivinilbenzensebanyak 0,5; 1 dan 2 molrasiomakaderajatpencangkokanmeningkatdari 3,57% menjadimasing-masing4,46%; 5,46% dan 6,54%. Kata kunci: anhidrida maleat,derajatpencangkokan, divinil benzen, karet alam siklis

Modification Of Natural Rubber Sir-20 With Cyclisation and Grafting Methods with Maleic Anhydride Eddiyanto Eddiyanto; Andreas Nababan; April Sinaga
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 5, No 2 (2022): JULI 2022
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v5i2.37450

Modification has been carried out through a cyclization process using an organic solvent of Xylene in the various of concentration of P2O5 as a Lewis Acid catalyst followed by the grafting process of Maleic Anhydride (MA) monomer using dicumyl peroxide (DCP) as the initiator. The success of the cyclization process of CNR formation can be seen from the FTIR analysis which shows typical peaks at the absorption wave of 741 cm-1 from the CH2 – CH2 cyclical strain vibration and a wavelength of 835 cm-1 from the non-cyclical strain vibration CH2 – CH2 indicating that cyclization has occurred. Furthermore, on the results of grafting, FTIR analysis was carried out to prove that the MA had been grafted on the Cyclic Natural rubber (CNR) so that the formation of CNR-g-MA as shown of the C=O wave number which was on wave number 1710 cm-1 and 1850 cm-1.

Morphology and thermal properties of polypropylene-montmorillonite nanocomposite using modified bentonite of Bener Meriah Aceh JULINAWATI JULINAWATI; BASUKI WIRJOSENTONO; EDDIYANTO EDDIYANTO; SAHARMAN GEA; ICHWANA RAMLI
Jurnal Natural Volume 20 Number 3, October 2020
Publisher : Universitas Syiah Kuala

Research on the use of modified bentonite from Bener Meriah Aceh to study the morphology and thermal properties of polypropylene-montmorillonite nanocomposite (PP-MMT) was carried out. Bentonite was isolated into nano-sized montmorillonite and modified with the addition of PP-g-MA as a compatibilizer and octadecylamine as a modifier of MMT. PP-MMT nanocomposite processing was carried out in an internal mixer at 180 oC with a time of 10 minutes, and a speed of 65 rpm. Based on the results of the TGA-DTA test, the modified bentonite from Bener Meriah Aceh with PP-g-MA and octadecylamine can improve the thermal properties of PP-MMT nanocomposite in a composition comparison of PP; PP-g-MA; MMT is 85; 10; 5. The SEM test results also showed that exfoliation and intercalation had occurred of MMT at PP-MMT nanocomposite.

Co-Authors ,, Sabani -, Sabani ., Julinawati A. Gazali S. Sinaga Abdullah, Herkules Ahmad Nasir Pulungan Ahmad Ramadhan Ahmad Ramadhan Ahmad Ramadhan Ahmad Ramadhan Aida Fitriani Sitompul Ajat Sudrajat Alkhafi Maas Siregar Ambarita, Graceana Andreas Nababan April Sinaga Ardiansyah Farabi Asmara Sari Nasution Astri Devi Br Pakpahan Ayu Rahmi Ayuandiva, Nabilla Sri Bangun, Prihatni Yoshepine BASUKI WIRJOSENTONO Basuki Wirjosentono Basuki WS Boni Mariska Ratnawati Br Gurusinga, Dinda Natalisa Dea Gracella Siagian Derita Munte, Sitti Darna Desi Ardilla Dian Arsita Fitri Dian Wardana Dian Wardana Dian Wardana Dian Wardana Dinda Prihatini Fitri Amne EFI SAID ALI Eka Nuryanto Enisa Cita Mentari Eva Marito Daulay Fadhilla, Vina Fahmi, Jam'an Farras, Hammid Al Grecy Kristina Tampubolon Herlinawtati, Herlinawati Hutahaean, Harvei Desmon Ichlas Rawo Syaputra ICHWANA RAMLI Irfandi Irfandi, Irfandi Irwan Harun Isnaini Prihatiningsih J. Sinaga, Zevi Junifa Layla Sihombing Justaman A Karo Karo Karo Karo, Justaman A Khairunisa, Dira Leny Novita Lita Sirait, Agustina Ruth Lukman, Isna Rezkia Maas Siregar, Alkhafi Mahmud Mahmud Manalu, Yuli Santika Manihar Situmorang Marini Damanik Martua Haojahan Saragih Masura M D Masyura M.D Masyura M.D Misril Fuadi Mufti Sudibyo, Mufti Muhammad Said Siregar Muhammad Tamrin Muhammad Thamrin Munthe, Sitti Darna Mutiara Agustina Nst Naainggolan, Bajoka Nainggolan, Mangido Neneng Windayani Noor, Nasruddin M Noor, Nasruddin M. Nurfajriani Nurfajriani Nurfajriani, Nurfajriani Nurhadi Syahputra Nuryanto, Eka Pasaribu, Elfrida Pasaribu, Elfrida Romaito Puji Prastowo, Puji Purwoko, Agus Putri Rosida Rahayu Rahayu Rahayu rahayu Ramadhan, Dwi Sapri Ramlan Silaban Reni Puji Astuti Retno Widiastuti Riska Ritonga Riski Elpari Siregar Rizka Alfi Fadhilah Rizka Fahreza Rizqi Rizaldi Hidayat S. Sinaga, A. Gazali Sabani . Sabani Sabani, Sabani Safitri, Wulan Dwi Saharman Gea Saharman Gea Salsabila Afani Saragih, Martua Haojahan Saronom Silaban SARONOM SILABAN Satria Mihardi Saud Salomo Sempurna Peranginangin Serli Wijaya Sihite, Onggal Sipahutar, Rezwan Mulya Syahputra, Ricky Andi Syarifuddin Syarifuddin Taufik Hidayat Tita Juwitaningsih Vina Fadhilla Wardana, Dian Wardana, Dian Widiastuti, Retno Yaya Rukayadi Yuli Santika Manalu Zuhairiah Nasution, Zuhairiah

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