Article Per Year (5 Year)
p-Index From 2021 - 2026
1.879
P-Index
This Author published in this journals
All Journal Reaktor JURNAL KIMIA SAINS DAN APLIKASI Chem Info Indonesian Journal of Chemistry Journal of Physics and Its Applications JURNAL PHOTON Lisanul Arab: Journal of Arabic Learning and Teaching Borobudur Greensphere: Journal of Environmental Chemistry Medical Journal of Soeradji
Tri Windarti
Department Of Chemistry, Faculty Of Science And Mathematics, Universitas Diponegoro, Jl. Prof. Soedharto SH, Tembalang, Semarang 50275, Indonesia
Agriculture, Biological Sciences & Forestry Arts Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Dentistry Earth & Planetary Sciences Education Energy Engineering Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Other

Published : 18 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Chem Info

 1 
Effect of Milling Time on nanostructured Hydroxyapatite Results Synthesis by Precipitation Method Pratiwi, Sari; Windarti, Tri; Nurhasanah, Iis
Chem Info Journal Vol 1, No 2 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A study "Effect of Milling Time on Nanostructured Hydroxyapatite Synthesis Results by Precipitation Method" in purpose to know the effect of milling time on purity, phases and size of hydroxyapatite crystals synthesized. Hydroxyapatite (HA) were synthesized by the method of precipitation by adding dropwise a solution of CaCl2 to a solution of KH2PO 4 which has been conditioned at pH 9 with stirring and heated at 40 °C for 4 hours. The resulting suspension was allowed to stand for 20 hours. Product of precipitation milled using a Planetary Ball Mill at 880 rpm angular velocity and the ratio of powder/ballmill 1:10 with milling time variation 0, 5, 15, 30 and 60 minutes. Based on the FTIR and XRD, it was concluded that the HA produced by milling time of 60 minutes has not been able to achieve high purity. Another type of calcium phosphate formed on the product is calcium hydrogen phosphate anhydrous (CHPA). The longer the milling time, the smaller the size of HA crystals. Size of HA crystals are formed on the nanometer scale is 49.85 nm; 38.30 nm; 34.84 nm; 33.44 nm and 30.44 nm.
SINTESIS HIDROKSIAPATIT DARI BATU KAPUR ALAM SECARA MEKANOKIMIA DENGAN VARIASI WAKTU PENGGILINGAN Riqti, Frederica Thalita; Windarti, Tri; Sutanto, Heri
Chem Info Journal Vol 1, No 2 (2013)
Publisher : Chem Info Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A study entitled synthesis of hydroxyapatite from natural limestone with variations mechanochemical milling time. The purpose of this research was to produce hydroxyapatite and to determine the effect of milling time on the purity, phases, and crystallite size on the synthesis of hydroxyapatite from limestone with mechanochemical method. The principle of this method is that the reaction between solids with the help of mechanical energy. Limestone that has been mashed mixed with powdered KH2PO4, mechanochemical process is then performed with the variation of time 0, 70, 80, 90, and 100 minutes. The resulting products were analyzed with FTIR and XRD and calculated by Scherrer equation to determine the crystallite size. Based on XRD and FTIR result, dominant types of calcium phosphate produced in this research were hydroxyapatite (HA) and tetracalcium phosphate (TTCP). Crystallite size of HA was formed on the time variation of 70, 80, 90, and 100 minutes ie 40.66 nm, 39.03 nm, 36.84 nm, and 39.78 nm.
Co-Authors Agus Subagio Ahmad Suseno Azis, Ibrahim Mul Abdul Bulan, Cahaya Ratu Indra Dewi, Anita Listiyani Eko Hidayanto Elesta, Prisca Putri Fenina Azalia Dewi Hascaryo Fibriani, Fadila Frederica Thalita Riqti Hanifah, Ulya Hella Arofah Heri Sutanto Hilwan Yuda Teruna Iis Nurhasanah Jasril Jasril Limpat Nulandaya Marspianko, Fonisyah Muchlisin Nawawi, Muchlisin Ngadiwiyana M.Si. S.Si. Nor Basid Adiwibawa Prasetya Nuryono Nuryono Pramesti, Regita Putri, Syaira Adelia Rahmawati, Elfani Febria Retno Purnama Irawati Ruseno, Ruseno Sari Pratiwi Sari, Diana Nurlaila Setiadi, Amalia Salsabila W. Widjijono Weni Safitri Yayuk Astuti