The present invention relates to modified starch sizing technology for textiles, in particular to a kind of alpha cyclodextrin immobilized starch and its preparation method. The characteristics of the starch are as follows: 50 parts of corn starch, 50 parts of alpha cyclodextrin, 20 parts of malic acid, 7.5 parts of sodium hypophosphite and 300 parts of deionized water. The technical scheme to solve the technical problems of the preparation method is to design a preparation method of a cyclodextrin-immobilized starch (CS alpha CD). The preparation method adopts the raw material quality composition of the acetylated corn starch and the following technological steps: (1) to prepare starch suspension from the corn starch, a cyclodextrin and 200 copies of ionless water, and transfer it to 500 mL. Three flasks were placed in a water bath pot at 85 C. The condensation device was connected and the gelatinization was heated for 30 minutes. Then 100 copies of malic acid and sodium hypophosphite solution containing the said amount were added through a constant pressure dropping funnel. The mixture was stirred evenly and transferred to the oven at 120 C for reaction for 2 hours before being taken out. (2) After the reaction, the starch was removed and crushed, washed twice with deionized water, washed twice with 75% ethanol, and centrifugally dried to obtain the sample of alpha cyclodextrin-loaded starch, namely CS alpha CD.
【技术实现步骤摘要】
一种α-环糊精改性淀粉浆料及其制备方法
本专利技术涉及纺织用变性淀粉浆料技术,具体为一种α-环糊精固载淀粉及其制备方法。
技术介绍
淀粉作为经纱上浆的主浆料,来源非常广泛,且价格低廉,但调浆手续麻烦、上浆性能也不能令人满意。PVA的出现,解决了疏水性纤维的上浆问题,其卓越的成膜性能被认为是经纱上浆的一次革命。但PVA难以降解对环境造成污染,被认为是不洁浆料。由于淀粉资源丰富,易于降解,人们可利用淀粉大分子结构上的特点,对淀粉进行化学或物理变性,改善淀粉的实用性能。取代PVA的一条思路就是对淀粉进行变性处理,以达到单独或与丙烯酸类浆料混合使用,革除PVA的目的。环糊精(简称CD),一般由6-8个葡萄糖分子组成,分子形如一个圆筒,表面分布着众多的反应性羟基,水溶性强,是一种天然的寡糖,其结构与淀粉相似,与淀粉结合后能够形成一种保持水溶性,且不破坏其降解性的新型淀粉。在国内外的研究中,多数研究偏向于将β-环糊精固载到如聚苯乙烯、聚乳酸、壳聚糖及纤维素等合成或天然高分子材料中,但以淀粉为载体,制备环糊精固载淀粉浆纱材料方面的研究却十分稀少。不仅如此,此前的研究大多局限于β-环糊精对各种材料的固载,而有关α-环糊精在淀粉及壳聚糖等天然大分子上的固载化方面鲜有研究。基于此,α-环糊精(α-CD)可以通过交联的方式固载到淀粉分子上,形成α-环糊精化学修饰多糖衍生物,使之兼有淀粉和环糊精的性质,包括具有良好的机械性能、化学稳定性和化学可调性等优点。同时环糊精的引入,也可在很大程度上改变淀粉自身的理化性质,如结晶度的降低、特性粘度和表观粘度降低、水合能力的增强和抗老化性的提 ...
【技术保护点】
1.一种α‑环糊精固载淀粉(CS‑αCD),其特征在于该淀粉的原料质量组成份数为:玉米淀粉50份;α‑环糊精50份;苹果酸20份;次磷酸钠7.5份;去离子水300份,取代度为0.61~0.66。
【技术特征摘要】
1.一种α-环糊精固载淀粉(CS-αCD),其特征在于该淀粉的原料质量组成份数为:玉米淀粉50份;α-环糊精50份;苹果酸20份;次磷酸钠7.5份;去离子水300份,取代度为0.61~0.66。2.一种α-环糊精固载淀粉(CS-αCD)的制备方法,该制备方法采用权利要求1所述α-环糊精固载淀粉(CS-αCD)的原料质量组成和以下工艺步骤:(1)把所述份数的玉米原淀粉、α...
【专利技术属性】
技术研发人员:张昊,李雅兴,张毅,
申请(专利权)人:天津工业大学,
类型:发明
国别省市:天津,12
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