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首页> 外文会议>第五届制浆造纸新技术国际研讨会（ISETPP）暨第三届国际造纸与环境学术大会（IPEC）论文集 >Studies on Performaces of Lignin-based Water-absorbent Resin
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Studies on Performaces of Lignin-based Water-absorbent Resin

机译：木质素基吸水树脂性能研究

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Water-absorbent resin,as a kind of functional polymers,was widely used in various fields,such as medicine and health care,agriculture,forestry and gardening,desert control,etc.Utilizing biomass resources to synthesizing water-absorbent resin as a new research direction have driven a strong global interest due to environment pollution.Lignin,as the second most abundant renewable biopolymer in nature,has been a candidate for renewable materials.In this paper,the water-absorbent resins were synthesized from lignosulfonate and acrylic acid(AA)by grafting copolymerization under aqueous solution with potassium persulfate as initiator and N'N-methylene-bis-acrylamide as crosslinking agent,which are compared to several other kinds of lignins under the same reaction conditions.Lignosulfonate was tried by using the single-factor method,the optimum process parameters in this experiment system are obtained(in wt％): acrylic acid 30％,lignosulfonate 2.67％(to AA),cross-linker 0.03％(to AA),initiator 0.43％(to AA),and neutralization 65％,the optimum reaction temperature was 60 ℃.Under these conditions,the water absorbency of the lignosulfonate resin was 1348 g/g in deionized water.Comparing of thewater absorption properties of these synthetic resins from different kinds of lignin,the results showed that,lignosulfonate resin(1348 g/g)＞ lignocresol resin(1262 g/g)＞＞alkali lignin resin(518 g/g)＞ polyacrylic acid resin 439 g/g).Lignocresol is anovel lignin,it is synthesized through phase separation system,the introduced cresol can be changed into catechol,resorsicol or pyrogallol according to the application purpose,the higher water absorbent potential can be concluded.
机译：吸水性树脂作为一种功能性聚合物，已广泛应用于医药卫生，农业，林业，园林，沙漠防治等各个领域。利用生物质资源合成吸水性树脂是一项新的研究。木质素作为自然界中第二大的可再生生物聚合物，已成为可再生材料的候选材料。本文以木质素磺酸盐和丙烯酸（AA）为原料合成了吸水树脂。以过硫酸钾为引发剂和N'N-亚甲基-双丙烯酰胺为交联剂在水溶液中接枝共聚，并与相同反应条件下的其他几种木质素进行了比较。方法，获得了本实验系统的最佳工艺参数（以重量％计）：丙烯酸30％，木素磺酸盐2.67％（相对于AA），交联剂0.03％（相对于AA），引发剂0。 43％（相对于AA），中和度为65％，最佳反应温度为60℃。在此条件下，木质素磺酸盐树脂在去离子水中的吸水率为1348 g / g。结果表明，木质素磺酸盐树脂（1348 g / g）＞木质素甲酚树脂（1262 g / g）＞＞碱金属木质素树脂（518 g / g）＞聚丙烯酸树脂439 g / g）。酚醛木质素，是通过相分离体系合成的，可以根据应用目的将引入的甲酚转变为邻苯二酚，间苯二酚或邻苯三酚，具有较高的吸水潜力。

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