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High strength retention of cellulose fibers crosslinking with synthesized low-molecular-weight copolymers of itaconic acid and acrylic acid
Cellulose ( IF 5.7 ) Pub Date : 2020-11-11 , DOI: 10.1007/s10570-020-03574-z
Ting Liang , Kelu Yan , Tao Zhao , Yan Liu , Bolin Ji

1,2,3,4-Butanetetracarboxylic acid (BTCA) can cause significant strength loss to cotton fabrics, but it has been proven that a flexible molecular structure could benefit the strength in our previous study. In this research, more flexible copolymers [P(IA–AA)] were synthesized with itaconic acid (IA) and acrylic acid (AA) and creatively used as a formaldehyde-free crosslinking reagent for cotton fabrics to replace BTCA. The optimal synthetic conditions of P(IA–AA) were recommended as that the molar ratio of IA:AA and reaction time were 1:1 and 3 h, respectively. The structure of P(IA–AA) was characterized with proton nuclear magnetic resonance spectroscopy, mass spectroscopy and Fourier transform infrared spectroscopy. Results provided evidence that the P(IA–AA) was synthesized with two IA and two AA molecules (molecular weight was 406). Through careful selection, the optimal anti-wrinkle finishing conditions were P(IA–AA) concentration of 160 g/L, pH value of 2.1, curing temperature of 180 °C, and curing time of 2 min. By comparing with IA, BTCA, citric acid (CA), and copolymers of maleic acid (MA) and AA [P(MA–AA)] in the similar conditions, the P(IA–AA)-treated fabrics showed the highest tearing strength retention of 59.30% and whiteness index of 77.60, and the wrinkle recovery angle of the P(IA–AA)-treated fabrics (245.1° ± 0.85°) was comparable with that of the CA-treated ones (244.7° ± 4.30°). Additionally, by separating the strength loss caused by degradation (TSLD) from that caused by crosslinking (TSLC), the P(IA–AA)-treated fabrics presented about 10% less TSLD than P(MA–AA)-treated ones with a comparable TSLC.



中文翻译:

与衣康酸和丙烯酸的合成低分子量共聚物交联的纤维素纤维的高强度保持力

1,2,3,4-丁烷四羧酸(BTCA)可能导致棉织物强度显着下降,但在我们先前的研究中,已经证明灵活的分子结构可以提高强度。在这项研究中,使用衣康酸(IA)和丙烯酸(AA)合成了更具柔韧性的共聚物[P(IA–AA)],并创造性地用作棉织物的无甲醛交联剂,以代替BTCA。推荐了P(IA–AA)的最佳合成条件,因为IA:AA的摩尔比和反应时间分别为1:1和3 h。P(IA–AA)的结构通过质子核磁共振光谱,质谱和傅里叶变换红外光谱进行了表征。结果提供了P(IA–AA)由两个IA和两个AA分子(分子量为406)合成的证据。通过仔细选择,最佳的抗皱整理条件是P(IA–AA)浓度为160 g / L,pH值为2.1,固化温度为180°C,固化时间为2分钟。通过在类似条件下与IA,BTCA,柠檬酸(CA)以及马来酸(MA)和AA [P(MA–AA)]的共聚物进行比较,经P(IA–AA)处理的织物显示出最高的撕裂度P(IA–AA)处理的织物的强度保持率为59.30%,白度指数为77.60,折皱恢复角(245.1°±0.85°)与CA处理的织物(244.7°±4.30°)相当)。此外,通过将降解引起的强度损失(TSLD)与交联引起的强度损失(TSLC)分开,经P(IA–AA)处理的织物比经P(MA–AA)处理的织物的TSLD少约10%。可比较的TSLC。最佳的抗皱整理条件是P(IA–AA)浓度为160 g / L,pH值为2.1,固化温度为180°C,固化时间为2分钟。通过在类似条件下与IA,BTCA,柠檬酸(CA)以及马来酸(MA)和AA [P(MA–AA)]的共聚物进行比较,经P(IA–AA)处理的织物显示出最高的撕裂度P(IA–AA)处理的织物的强度保持率为59.30%,白度指数为77.60,折皱恢复角(245.1°±0.85°)与CA处理的织物(244.7°±4.30°)相当)。此外,通过将降解引起的强度损失(TSLD)与交联引起的强度损失(TSLC)分开,经P(IA–AA)处理的织物比经P(MA–AA)处理的织物的TSLD少约10%。可比较的TSLC。最佳的抗皱整理条件是P(IA–AA)浓度为160 g / L,pH值为2.1,固化温度为180°C,固化时间为2分钟。通过在类似条件下与IA,BTCA,柠檬酸(CA)以及马来酸(MA)和AA [P(MA–AA)]的共聚物进行比较,经P(IA–AA)处理的织物显示出最高的撕裂度P(IA–AA)处理的织物的强度保持率为59.30%,白度指数为77.60,折皱恢复角(245.1°±0.85°)与CA处理的织物(244.7°±4.30°)相当)。此外,通过将降解引起的强度损失(TSLD)与交联引起的强度损失(TSLC)分开,经P(IA–AA)处理的织物比经P(MA–AA)处理的织物的TSLD少约10%。可比较的TSLC。固化时间为2分钟。通过在类似条件下与IA,BTCA,柠檬酸(CA)以及马来酸(MA)和AA [P(MA–AA)]的共聚物进行比较,经P(IA–AA)处理的织物显示出最高的撕裂度P(IA–AA)处理的织物的强度保持率为59.30%,白度指数为77.60,折皱恢复角(245.1°±0.85°)与CA处理的织物(244.7°±4.30°)相当)。此外,通过将降解引起的强度损失(TSLD)与交联引起的强度损失(TSLC)分开,经P(IA–AA)处理的织物比经P(MA–AA)处理的织物的TSLD少约10%。可比较的TSLC。固化时间为2分钟。通过在类似条件下与IA,BTCA,柠檬酸(CA)以及马来酸(MA)和AA [P(MA–AA)]的共聚物进行比较,经P(IA–AA)处理的织物显示出最高的撕裂度P(IA–AA)处理的织物的强度保持率为59.30%,白度指数为77.60,折皱恢复角(245.1°±0.85°)与CA处理的织物(244.7°±4.30°)相当)。此外,通过将降解引起的强度损失(TSLD)与交联引起的强度损失(TSLC)分开,经P(IA–AA)处理的织物比经P(MA–AA)处理的织物的TSLD少约10%。可比较的TSLC。经P(IA–AA)处理的织物显示出最高的撕裂强度保持力59.30%,白度指数为77.60,经P(IA–AA)处理的织物的折皱恢复角(245.1°±0.85°)可比与经CA处理的烟盒(244.7°±4.30°)相同。此外,通过将降解引起的强度损失(TSLD)与交联引起的强度损失(TSLC)分开,经P(IA–AA)处理的织物比经P(MA–AA)处理的织物的TSLD少约10%。可比较的TSLC。经P(IA–AA)处理的织物显示出最高的撕裂强度保持力59.30%,白度指数为77.60,经P(IA–AA)处理的织物的折皱恢复角(245.1°±0.85°)可比与经CA处理的烟盒(244.7°±4.30°)相同。此外,通过将降解引起的强度损失(TSLD)与交联引起的强度损失(TSLC)分开,经P(IA–AA)处理的织物比经P(MA–AA)处理的织物的TSLD少约10%。可比较的TSLC。

更新日期:2020-11-12
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