ABSTRACT Cross-linked polymer beads with different cross-linking agent loading were prepared by carrying out cross-linking suspension copolymerization of styrene-divinylbenzene (St- DVB) monomers using guar gum (GG) and xanthan gum (XG) from bioresources as eco-friendly suspension biopolymer stabilizers in the presence of non reactive diluents. The effects of GG and XG as suspension biostabilizers on the characteristics of the styrene copolymer beads were investigated regarding thermal properties, porosity characteristics, solvent swelling ratio, and surface morphologies using TGA, DSC, XRD, SEM, BET analyses. Spherical and regular beads with smooth surface were produced and the average particle size was in the range 170–290 μm (50–80 mesh size). The porosity characteristics of the produced beads including surface area and pore volume were in range 0.45 m2/g and 32–45 ml/g, respectively. Overall, the present article provided a novel route to prepare cross-linked polystyrene copolymer beads with tunable porosity suitable for catalyst support.

中文翻译：

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使用来自生物资源的瓜尔胶和黄原胶作为替代合成悬浮稳定剂合成具有可调孔隙率的交联聚苯乙烯共聚物珠的新路线


摘要：以生物资源中的瓜尔胶（GG）和黄原胶（XG）为生态材料，通过苯乙烯-二乙烯基苯（St-DVB）单体进行悬浮交联共聚，制备出不同交联剂负载量的交联聚合物珠粒。在非反应性稀释剂存在下，友好的悬浮生物聚合物稳定剂。使用 TGA、DSC、XRD、SEM、BET 分析研究了 GG 和 XG 作为悬浮生物稳定剂对苯乙烯共聚物珠的热性能、孔隙率特性、溶剂溶胀比和表面形貌的影响。生产出表面光滑的球形和规则珠子，平均粒径在 170–290 μm（50–80 目尺寸）范围内。所生产珠粒的孔隙率特征（包括表面积和孔体积）分别在 0.45 m2/g 和 32–45 ml/g 范围内。总的来说，本文提供了一种制备适合催化剂载体的具有可调孔隙率的交联聚苯乙烯共聚物珠粒的新途径。