Enhancing the flexibility of polyvinyl alcohol/Uncaria gambir extract/boric acid biopolymer films via prolonged water immersion post-treatment

Q1 Environmental Science
Dieter Rahmadiawan , Hairul Abral , Shih-Chen Shi , Ilham Chayri Iby , Razan Muhammad Railis , Melbi Mahardika , Dian Juliadmi , Fazhar Akbar
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引用次数: 0

Abstract

Polyvinyl alcohol (PVA) films mixed with boric acid (BA) and Uncaria gambir (UG) offer excellent UV shielding and moisture resistance but suffer from brittleness. This study introduces a water immersion technique to improve flexibility. The untreated film showed high tensile strength (57.7 MPa) and modulus (3.7 GPa) but low elongation (∼43 %) and toughness (20.2 MJ/m3). After 7 days of immersion, tensile strength and modulus decreased to 41.2 MPa and 1.94 GPa, while elongation and toughness increased to ∼150 % and 58.1 MJ/m3, respectively. This green approach effectively enhances the ductility of PVA-based biopolymer films.
通过长时间的水浸后处理提高聚乙烯醇/钩藤甘比亚提取物/硼酸生物聚合物薄膜的柔韧性
聚乙烯醇(PVA)薄膜与硼酸(BA)和云母(UG)混合,具有良好的紫外线屏蔽和防潮性能,但易碎。本研究介绍一种水浸技术,以提高柔韧性。未经处理的薄膜具有较高的拉伸强度(57.7 MPa)和模量(3.7 GPa),但伸长率(~ 43%)和韧性(20.2 MJ/m3)较低。浸泡7天后,拉伸强度和模量分别下降到41.2 MPa和1.94 GPa,伸长率和韧性分别增加到~ 150%和58.1 MJ/m3。这种绿色方法有效地提高了聚乙烯醇基生物聚合物薄膜的延展性。
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来源期刊
Case Studies in Chemical and Environmental Engineering
Case Studies in Chemical and Environmental Engineering Engineering-Engineering (miscellaneous)
CiteScore
9.20
自引率
0.00%
发文量
103
审稿时长
40 days
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