The Effect of Uncaria gambir on Optical Properties and Thermal Stability of CNF/PVA Biocomposite Films
作者机构：Mechanical Engineering DepartmentUniversitas Negeri PadangPadang25173Indonesia Centre for Energy and Power Electronics ResearchUniversitas Negeri PadangPadang25173Indonesia Department of Mechanical EngineeringNational Cheng Kung University(NCKU)Tainan70101Taiwan Mechanical Engineering DepartmentUniversitas IndonesiaDepok16424Indonesia Mechanical Engineering DepartmentUniversitas AndalasPadang25163Indonesia
出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)
年 卷 期：2024年第12卷第9期
页 面：1593-1603页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：funded by the Institute for Research and Community Service(LPPM)Universitas Negeri Padang Indonesia with a Contract Number:1529/UN35.15/LT/2023
主 题：Cellulose nanofiber biocomposite film optical properties Uncaria gambir thermal stability
摘 要：Cellulose-based film has gained popularity as an alternative to synthetic polymers due to its outstanding *** all types of cellulose materials available,cellulose nanofiber(CNF)has great potential to be utilized in a diverse range of applications,including as a film *** this study,CNF biocomposite film was prepared by using polyvinyl alcohol(PVA)as a matrix and Uncaria gambir extract as a *** study aims to investigate the effect of Uncaria gambir extract on the optical properties and thermal stability of the produced *** formation of the CNF biocomposite films was confirmed using Fourier Transform Infrared Spectroscopy,their transmittance characteristics were measured using UV-Vis spectroscopy and a transmittance meter,while their reflectance was determined using a reflectance *** results revealed that the addition of Uncaria gambir extract to the CNF biocomposite film improved its UV-shielding properties,as indicated by the lower percentage of transmittance in the visible region,10%–70%.In addition,its reflectance increased to 10.6%compared to the CNF film without the addition of Uncaria gambir ***,the thermal stability of the CNF biocomposite film with the addition of Uncaria gambir extract improved to around 400℃–500℃.In conclusion,the results showed that CNF biocomposite film prepared by adding Uncaria gambir extract can be a promising candidate for optical and thermal management materials.
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