Effect of alkali-treated Putranjiva roxburghii seed shell filler on physico-chemical, thermal, mechanical, and barrier properties of polyvinyl alcohol-based biofilms

IF 3.8 4区 工程技术 Q2 CHEMISTRY, APPLIED
Muthukrishnan Krishnan Manthira Moorthy, Selvakumar Gurusamy, Balasundar Pandiarajan, Balavairavan Balasubramanian, Narayanasamy Pandiarajan, Indran Suyambulingam, Sanjay Mavinkere Rangappa, Suchart Siengchin
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Abstract

Biopolymers and bio-fillers derived from natural, organic, and abundant resources have garnered more responsiveness owing to their affordability and degradability in the production of packaging plastics. This study explores the novel use of different proportions (5%, 10%, 15%, and 20%) of 5% alkali-treated Putranjiva roxburghii seed shell filler (PRSSF) as a bio-filler in combination with polyvinyl alcohol (PVA) for the first time. FTIR analysis showed the creation of robust hydrogen bonds and enhanced compatibility between the matrix and the alkalized PRSSF. The XRD results revealed that alkalized PRSSF strengthens the structural integrity of biofilms. The water absorption of the PVA/at PRSSF biofilm samples decreased by 88.38% at a higher composition (20%) of alkali-treated PRSSF due to their alkalized hydrophobic filler. Due to the effect of at-PRSSF into PVA, the resulting films demonstrated a degradation temperature and char residue of 334.8°C and 13.57%, respectively, and relatively better UV-barrier properties in a range of visible light. When compared with pure PVA films, the tensile strength and corresponding modulus of PVA/20% at-PRSSF films increased by 32.94% and 16.2%, respectively. Therefore, the PVA/at-PRSSF biofilms produced in this study are ideal materials for wrapping and folding applications.

Highlights

  • PVA/at-PRSSF films outperform in multiple aspects as compared with pure PVA.
  • Tensile strength of PVA/20%-PRSSF films increased by 32.94%.
  • Elongation at break decreased with at-PRSSF loading.
  • Water absorption in PVA/20% PRSSF biofilm decreased by 88.38%.
  • Fractography showed voids and agglomerations at high filler levels.

Abstract Image

碱处理的普兰茹籽壳填料对聚乙烯醇基生物膜的物理化学性能、热性能、机械性能和阻隔性能的影响
从天然、有机和丰富的资源中提取的生物聚合物和生物填料因其经济实惠和可降解性,在包装塑料生产中得到了越来越多的响应。本研究首次探索了将不同比例(5%、10%、15% 和 20%)的 5%碱处理过的罗布麻籽壳填料(PRSSF)作为生物填料与聚乙烯醇(PVA)结合使用的新方法。傅立叶变换红外光谱分析显示,基质与碱化的 PRSSF 之间建立了牢固的氢键,并增强了相容性。XRD 结果表明,碱化 PRSSF 增强了生物膜结构的完整性。在碱处理过的 PRSSF 成分较高(20%)的情况下,PVA/at PRSSF 生物膜样品的吸水性降低了 88.38%,这是由于其疏水性填料被碱化所致。由于在 PVA 中加入了碱处理 PRSSF,薄膜的降解温度和炭残留量分别降低了 334.8°C 和 13.57%,在可见光范围内具有更好的紫外线阻隔性能。与纯 PVA 薄膜相比,PVA/20% at-PRSSF 薄膜的拉伸强度和相应模量分别提高了 32.94% 和 16.2%。与纯 PVA 相比,PVA/20% at-PRSSF 薄膜的拉伸强度和相应模量分别提高了 32.94% 和 16.2%。PVA/20%-PRSSF 薄膜的拉伸强度提高了 32.94%。断裂伸长率随着 at-PRSSF 负载的增加而降低。PVA/20% PRSSF 生物膜的吸水性降低了 88.38%。在高填料水平下,碎裂图显示出空隙和团聚。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Vinyl & Additive Technology
Journal of Vinyl & Additive Technology 工程技术-材料科学:纺织
CiteScore
5.40
自引率
14.80%
发文量
73
审稿时长
>12 weeks
期刊介绍: Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.
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