Polyvinyl alcohol/nanocellulose nanocomposites from oil palm empty fruit bunch as anion exchange membranes for direct alcohol-hydrogen peroxide fuel cells

IF 4.9 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD Cellulose Pub Date : 2024-01-02 DOI:10.1007/s10570-023-05692-w

Chumphol Yunphuttha, Supatta Midpanon, David W. M. Marr, Pinsuda Viravathana

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Abstract

A series of nanocomposites based on quaternized polyvinyl alcohol (PVA) and nanocellulose (NC) from oil palm empty fruit bunch have been used as anion exchange membranes (AEM) for direct alcohol-hydrogen peroxide fuel cell (DAHPFC) applications. The PVA and NC are individually quaternized with hexadecyltrimethyl ammonium bromide (HDT) and glycidyltrimethyl ammonium chloride (GAC), cross-linked, and cast to form quaternized polyvinyl alcohol/quaternized nanocellulose (QPVA/QNC) membranes following thermal treatment. We observe that an increase of QNC quaternization degree increases quaternary ammonium content and the dimensional stability of the QPVA/QNC membranes while inhibiting PVA matrix crystallinity, decreasing both HDT dispersal and membrane thermal stability. We determine that QPVA/QNC_GAC30% membranes exhibit a maximum ion conductivity of 9.85 ± 0.07 mS/cm at room temperature and 29.07 ± 1.76 mS/cm at 80 °C with an ion exchange capacity of approximately 1.14 meq/g. Addition of QNC also enhances the alkaline stability of the optimized QPVA/QNC membrane with less ion conductivity loss. Optimized QPVA/QNC membranes have been demonstrated as an AEM in DAHPFCs without the use of platinum based catalysts. Compared with other membranes, we believe this nanocomposite membrane with comparable performances can promise AEM application in DAHPFCs.

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将油棕空果束中的聚乙烯醇/纳米纤维素纳米复合材料用作直接醇-过氧化氢燃料电池的阴离子交换膜

一系列基于季铵化聚乙烯醇（PVA）和油棕空果束纳米纤维素（NC）的纳米复合材料已被用作阴离子交换膜（AEM），用于直接醇-过氧化氢燃料电池（DAHPFC）。PVA 和 NC 分别用十六烷基三甲基溴化铵（HDT）和缩水甘油基三甲基氯化铵（GAC）季铵化、交联，并在热处理后浇铸成季铵化聚乙烯醇/季铵化纳米纤维素（QPVA/QNC）膜。我们观察到，QNC 季铵化程度的增加提高了季铵含量和 QPVA/QNC 膜的尺寸稳定性，同时抑制了 PVA 基质的结晶性，降低了 HDT 的分散性和膜的热稳定性。我们确定 QPVA/QNCGAC30% 膜在室温下的最大离子传导率为 9.85 ± 0.07 mS/cm，在 80 °C 时为 29.07 ± 1.76 mS/cm，离子交换容量约为 1.14 meq/g。添加 QNC 还增强了优化 QPVA/QNC 膜的碱性稳定性，减少了离子传导性损失。经过优化的 QPVA/QNC 膜已被证明可在 DAHPFC 中用作 AEM，而无需使用铂催化剂。与其他膜相比，我们认为这种性能相当的纳米复合膜有望在 DAHPFC 中应用 AEM。

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.