Herein we present arabinoxylan (AX)-based thermoplastics obtained by ring opening oxidation and subsequent reduction (dA-AX) combined with hydrophobization with three different glycidyl ethers [n-butyl (BuGE), isopropyl (iPrGE) and 2-ethylhexyl (EtHGE) glycidyl ether]. We also present the relationship of structural composition, thermal processing and thermomechanical properties. The BuGE and iPrGE etherified dA-AXs showed glass transition temperatures (Tg) far below their degradation temperatures and gave thermoplastic materials when compression-molded at 140˚C. The BuGE (3 mole) etherified dA-AX films at 19 and 31 % oxidation levels exclusively exhibit 244 % (±42) and 267 % (±72) elongation. In contrast, iPrGE-dA-AX samples with shorter and branched terminals in the side chains had maximum 60 % (±19) elongation. The dramatic difference in elongation is assumed to be due to the presence of longer alkoxide chains, higher molar substitution and dual Tg for the BuGE samples. Such superior elongation of AX thermoplastic films and its relationship with molar substitution and Tg has not been reported before.

中文翻译：

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氧化水平和缩水甘油醚结构决定了阿拉伯木聚糖衍生热塑性塑料的热加工性能和热机械性能

本文中，我们介绍了通过开环氧化和随后的还原（dA-AX）以及与三种不同的缩水甘油醚[正丁基（BuGE），异丙基（iPrGE）和2-乙基己基（EtHGE）疏水化结合而获得的基于阿拉伯木聚糖（AX）的热塑性塑料缩水甘油醚]。我们还介绍了结构组成，热处理和热机械性能之间的关系。BuGE和iPrGE醚化dA-AXs的玻璃化转变温度（Tg）远低于其降解温度，并在140°C压缩成型时得到热塑性材料。氧化水平为19％和31％的BuGE（3摩尔）醚化dA-AX薄膜仅显示244％（±42）和267％（±72）的伸长率。相反，在侧链中具有较短和分支末端的iPrGE-dA-AX样品具有最大60％（±19）的伸长率。假定伸长率的巨大差异是由于BuGE样品存在更长的醇盐链，更高的摩尔取代度和双重Tg。AX热塑性薄膜的这种优异的伸长率及其与摩尔取代度和Tg的关系尚未见报道。