基于点击化学的形状记忆羊毛织物的制备
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摘要
为了使羊毛织物获得形状记忆的功能,首先利用三(2-羧乙基)磷(TCEP)将羊毛大分子中的二硫键还原成巯基,之后基于巯基-烯点击化学反应,将N-异丙基丙烯酰胺(NIPAAm)接枝到已被还原的羊毛大分子中,可获得形状记忆的功能。通过红外光谱和扫描电镜测试,观察并分析了形状记忆整理前后羊毛纤维结构和形态的变化。对整理后羊毛织物的接触角与形状记忆性能进行了测试。结果表明:经该方法处理的羊毛织物亲水性得到了改善,并具有一定的形状记忆功能,临界相转变温度(LCST)为57.4℃,形状回复率为63.64%。
In order to obtain the shape memory function for wool fabrics, tris(2-carboxyethyl) phosphorus(TCEP) was adopted to reduce the disulfide bonds in wool macromolecules to sulfhydryl groups. Subsequently, based on the thiol-ene click chemistry reaction, N-isopropyl acrylamide(NIPAAm) was grafted into the reduced wool macromolecules to obtain the shape memory function. The structure and morphology of the fiber was characterized by FTIR and SEM before and after grafted. Shape memory functions and contact angles of the finished wool fabrics were tested. The contact angle and shape memory performance of the finished wool fabrics were tested. The results showed that the hydrophilicity of wool fabric treated by this method was improved, and it had a certain shape memory function, the lower critical solution temperature(LCST) was 57.4 °C, and the shape recovery rate was 63.64%.
In order to obtain the shape memory function for wool fabrics, tris(2-carboxyethyl) phosphorus(TCEP) was adopted to reduce the disulfide bonds in wool macromolecules to sulfhydryl groups. Subsequently, based on the thiol-ene click chemistry reaction, N-isopropyl acrylamide(NIPAAm) was grafted into the reduced wool macromolecules to obtain the shape memory function. The structure and morphology of the fiber was characterized by FTIR and SEM before and after grafted. Shape memory functions and contact angles of the finished wool fabrics were tested. The contact angle and shape memory performance of the finished wool fabrics were tested. The results showed that the hydrophilicity of wool fabric treated by this method was improved, and it had a certain shape memory function, the lower critical solution temperature(LCST) was 57.4 °C, and the shape recovery rate was 63.64%.
引文
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[10] FUTSCHER M H, PHILIPP M, MǜLLERBUSCHBAUM P, et al. The role of backbone hydration of poly(N-isopropyl acrylamide) across the volume phase transition compared to its monomer[J]. Sci Rep, 2017, 7(1):17012.
[11] 孙晓君,张钦,尚岩,等.亲水型温敏凝胶聚合物的制备与性能分析[J].哈尔滨理工大学学报,2010,15(5):1-5.
[2] 刘森,王磊.形状记忆材料及其在纺织中的应用[J].化纤与纺织技术,2013,42(4):27-29,35.
[3] 刘荣欣.不同形状记忆整理方法对毛织物性能的影响[J].毛纺科技,2016,44(12):27-30.
[4] XIAO X, ZHOU H, QIAN K. Mechanism study of biopolymer hair as a coupled thermo-water responsive smart material[J]. Smart Material Structures, 2017, 26(3):035023.
[5] DON T M, LU K Y, LIN L J, et al. Temperature/pH/enzyme triple-responsive cationic protein/PAA-b-PNIPAAm nanogels for controlled anticancer drug and photosensitizer delivery against multidrug resistant breast cancer cells.[J]. Mol Pharm, 2017,14(12):4648-4660.
[6] 李斌,陈文广,王晓工,等.聚丙烯表面接枝PNIPAAm膜Ⅰ:光接枝反应和表面形态结构研究[J].高分子学报,2002(6):780-785.
[7] 刘今强,张芳,邵建中,等.棉纤维的N-异丙基丙烯酰胺接枝共聚及产物的温敏性研究[J].高分子学报,2009(12):1266-1273.
[8] GUO H, LI Y, ZHENG J, et al. High thermo-responsive shape memory epoxies based on substituted biphenyl mesogenic with good water resistance[J]. Rsc Advances, 2015, 82(5):67247-67257.
[9] 胡懿. 基于点击化学的蛋白质纤维改性研究[D].上海:东华大学,2017.
[10] FUTSCHER M H, PHILIPP M, MǜLLERBUSCHBAUM P, et al. The role of backbone hydration of poly(N-isopropyl acrylamide) across the volume phase transition compared to its monomer[J]. Sci Rep, 2017, 7(1):17012.
[11] 孙晓君,张钦,尚岩,等.亲水型温敏凝胶聚合物的制备与性能分析[J].哈尔滨理工大学学报,2010,15(5):1-5.