化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (9) : 104-109. DOI: 10.19817/j.cnki.issn1006-3536.2022.09.021

新材料与新技术

具有抗紫外性能的PVA/HPMC复合改性薄膜

^1,2,3,4

^1,2,3,4*

作者信息 +

PVA/HPMC composite film with anti-ultraviolet performance

Chai Li¹, Wang Jinyang¹, Wang Guanglin¹, Chen Zuguo^1,2,3,4, Yang Fuxin^1,2,3,4

Author information +

文章历史 +

Received		Published
2021-05-20		2022-09-20
Issue Date	Revised Date
2022-09-27	2021-05-20

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摘要

将各有3种梯度(0.4%、0.8%、1.2%)的纳米SiO₂与木质素按不同配比加入到羟丙基甲基纤维素(HPMC)/聚乙烯醇(PVA)薄膜基质中。对复合薄膜的性质进行检测,并对葵花籽油进行包装。结果表明:随着木质素含量的增加,薄膜获得紫外光阻隔性、韧性提高,当薄膜中木质素含量达到1.2%时,UVA光线的透过率(T_UVA)<10%,UVB光线的透过率(T_UVB)<1%,断裂伸长率增至纯膜的2.5倍;少量纳米SiO₂的加入能够提高薄膜的拉伸强度及阻隔性。在所有实验样品中薄膜4^#(SiO₂:0.4%,木质素:1.2%)的综合性能最好。

Abstract

Nano-SiO₂ and lignin with three gradients (0.4%,0.8%,1.2%) were added into hydroxypropyl methylcellulose (HPMC)/polyvinyl alcohol (PVA) film matrix in different proportions.The properties of the film were tested and used in sunflower oil packaging.The results shown that with the increase of lignin content,the UV blocking property and toughness of the film were improved.When the lignin content in the film reached 1.2%,the transmittance of UVA(T_UVA) of the film was less than 10%,the transmittance of UVB(T_UVB) was less than 1%,and the elongation at break was increased to 2.5 times that of the pure film.The addition of small amount of Nano-SiO₂ can improve the tensile strength and barrier property of the film.Among all samples,film 4^#(SiO₂∶0.4%,Lignin∶1.2%)had the best comprehensive performance.

关键词

聚乙烯醇 / 羟丙基甲基纤维素 / 纳米二氧化硅 / 木质素 / 抗紫外

Key words

polyvinyl alcohol / hydroxypropyl methylcellulose / nanometer silicon dioxide / lignin / anti-ultraviolet

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具有抗紫外性能的PVA/HPMC复合改性薄膜[J]. 化工新型材料, 2022, 50(9): 104-109 DOI:10.19817/j.cnki.issn1006-3536.2022.09.021

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