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首页> 外文期刊>Fibers and Polymers >Microwave-assisted Synthesis, Characterization, and Textile Sizing Property of Carboxymethyl Corn Starch
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Microwave-assisted Synthesis, Characterization, and Textile Sizing Property of Carboxymethyl Corn Starch

机译：羧甲基玉米淀粉的微波辅助合成，表征及织物上浆性能

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In this work, carboxymethylated corn starch (CMCS) was synthesized using the microwave-assisted method with native corn starch (NCS) as the raw material, sodium hydroxide as the catalyst, and chloroacetic acid as the etherifying reagent. By varying the amount of etherifying reagent added, CMCS with degrees of substitution (DS) ranging from 0.034 to 0.070 were obtained. The molecular compositions, crystal structures, and granular configurations of the products were characterized using FT-IR, XRD, and SEM, respectively. The physicochemical characteristics of CMCS, such as hydration, rheological behavior, and gelatinization property, were studied systematically, and the results indicated that the aforementioned properties significantly changed. The intrinsic and apparent viscosities of CMCS decreased, whereas the solubility, swelling power, and anti-retrogradation were improved. The results from the Brabender viscosity curve analysis showed that the gelatinization temperature of CMCS decreased, which indicated that the gelatinization property and paste processing performance of CMCS were enhanced. These changes were attributed to the combined effects of both microwave radiation and carboxymethylation modification. To investigate the textile sizing property of CMCS, pure cotton yarns (60S) were sized using CMCS, NCS and PVA. The results showed that CMCS had considerably improved sizing and desizing properties compared with NCS, and some aspects of the performance were even close to those of PVA. The results of these tests indicated that this novel green sizing agent (CMCS) could have promising applications in textile manufacturing and become an ideal substitute for PVA.
机译：在这项工作中，以天然玉米淀粉（NCS）为原料，氢氧化钠为催化剂，氯乙酸为醚化剂，采用微波辅助方法合成了羧甲基化玉米淀粉（CMCS）。通过改变醚化试剂的添加量，获得取代度（DS）为0.034至0.070的CMCS。分别使用FT-IR，XRD和SEM表征了产物的分子组成，晶体结构和颗粒形态。系统地研究了CMCS的理化特性，如水合，流变行为和糊化特性，结果表明上述特性发生了显着变化。 CMCS的本征和表观粘度降低，而溶解度，溶胀力和抗降解性得到改善。 Brabender粘度曲线分析的结果表明，CMCS的糊化温度降低，这表明CMCS的糊化性能和糊料加工性能得到增强。这些变化归因于微波辐射和羧甲基化修饰的联合作用。为了研究CMCS的上浆性能，使用CMCS，NCS和PVA对纯棉纱（60S）进行上浆。结果表明，与NCS相比，CMCS的上浆和退浆性能得到了很大的改善，性能的某些方面甚至与PVA接近。这些测试的结果表明，这种新型的绿色上浆剂（CMCS）在纺织品制造中具有广阔的应用前景，并成为PVA的理想替代品。

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