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Amelia, Anita
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Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences

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Cellulose Nanofibers from Regenerated Cellulose fibers of Cigarette Butts and Application in Pickering Emulsion Amanda, Putri; Masruchin, Nanang; Amelia, Anita
Reaktor Volume 22 No.2 August 2022
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.22.2.49-58

Abstract

Cellulose nanofibers (CNF) have been applied in various applications due to the abundant raw materials and excellent mechanical and thermal properties. In this work, CNF from Cigarette butts (CNF-CB) was used as emulsion stabilized for oil in water emulsion. CNF was prepared from regenerated cellulose fibers that were produced by deacetylation of Cigarette butts waste using autoclave and then hydrolysis by chemical treatment using sulfuric acid. The FTIR spectra of CNF-CB showed chemically convert from Cigarette butts waste, indicating removal of the acetyl group. TEM micrographs showed nanocellulose with diameters of 8-32.30 nm. XRD analysis shows that the CNF-CB is a cellulose II allomorph with a crystallinity index of about 88.04%. Thermogravimetric analysis showed high char residue for the nanocellulose compared to raw fibers. The addition of CNF-CB with a concentration of 0.5% into the oil-in-water emulsion (O/W) showed better stability than commercial surfactant. In conclusion, this approach offers a promising strategy for upcycling cigarette butts waste to produce nanocellulose, which could be used in various applications.
A Phonological Analysis of English Brand Name Pronunciations by Indonesian, Japanese, and Korean Speakers: A Study of World Englishes Maldini, Rossy; Kinanditya, Agata Pritha; Amelia, Anita; Darsih, Endang
Proceedings Series on Social Sciences & Humanities Vol. 24 (2025): Proceedings of International Student Conference on Education (ISCE) 2025
Publisher : UM Purwokerto Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/pssh.v24i.1589

Abstract

The purpose of this study is to analyze the phonological adaptation patterns in the pronunciation of English brand names by native speakers of Indonesian, Japanese, and Korean. This study distinct from the phenomenon of globalization and the expantion of international brands, which provide phonological issues, Particulary when foreign words must be adapted to the phonological system of the mother tongue (L1). by Using a qualitative approach and descriptive phonological analysis, the data were collected from the pronunciation of famous brands by speakers from the three language groups. The findings indicate that segmental and suprasegmental adaptations are heavily influenced by the phonotactic structure of each L1. Japanese and Korean speakers typically use epenthesis and simplify segments to maintain the dominant CV syllable structure, whereas Indonesian speakers are more flexsible and frequently to keep the original sounds Furthermore, stress and intonation in speech show changes that match L1 prosody patterns. Sociolinguistic factors such as brand proximity also influence the level of adaption. This research increases the understanding of pronunciation variance in the context of World Englishes and gives implications for foreign language pronunciation education as well as interlingual phonology studies.
Co-Authors Amanda, Putri Endang Darsih Kinanditya, Agata Pritha Maldini, Rossy Nanang Masruchin