β-环糊精侧基聚硅氧烷的合成与表征  

Synthesis and characterization of polysiloxane with β-cyclodextrin side groups

作　　者：冯武[1] 

机构地区：[1]甘肃农业职业技术学院,甘肃兰州730020

出　　处：《日用化学工业》2008年第4期214-218,共5页China Surfactant Detergent & Cosmetics

摘　　要：烯丙基缩水甘油醚和β-环糊精在KOH作用下得到带有α烯基的环糊精衍生物——4-(3-烯丙氧-2-羟基)丙氧基-β-环糊精(PCD),利用PCD与含氢硅油(PHMS)在DMSO溶剂中的硅氢化加成反应,在铂催化剂的作用下,合成了一种侧链带有β-环糊精基团的亲水性聚硅氧烷。对产物的结构、相对分子质量及其分布、热性能及物化性能进行了研究。结果表明,由于PHMS分子链中硅氢键分布的不均匀性和β-环糊精较高的相对分子质量,产物的相对分子质量及其分布相对于PHMS都有很大提高。β-环糊精侧基聚硅氧烷(PDMS-g-β-CD)的相对密度和折射率随着β-环糊精含量的增加而增大。相对于聚硅氧烷,PDMS-g-β-CD的玻璃化温度较高。PDMS-g-β-CD有较好的亲水性,所成的膜与水的接触角小于90°。Firstly, 4 - （ 3 - acryloxy - 2 - hydroxy） propyloxy -β- cyclodextrin （ PCD ） was synthesized from 1 -allyloxy- 2,3 -epoxy propane （also named as allylglycidyl ether, or AGE） andβ- cyclodextrin （β-CD） with KOH as catalyst and dimethyl sulfoxide （DMSO） as solvent reaction medium. Then, in the presence of a platinum catalyst, a hydrophilic polysiloxane withβ- CD group at the side pendant chain （PDMS-g-β- CD） was synthesized by hydrosilylational addition of PCD with polyhydromethylsiloxane （PHMS） in solvent reaction medium DMSO. The structures and relative molecular weight and its distribution, thermo -characteristics as well as physico - chemical properties of the products were studied. The results showed that, due to the non - uniformity of the Si - H bond distribution of the molecular chain of PHMS, as well as the rather high molecular weight of the β- CD molecule, the molecular weight and the mole distribution of the product PDMS - g -β- CD has been significantly increased as compared with PHMS. its density and refractive index increased with increasing amount ofβ- CD group. Comparing with polysiloxane, the glass state temperature of PDMS - g -β- CD is higher and the hydrophilic property is better. Contact angle of water/PDMS - g -β- CD/air is less than 90°.

关 键 词：表面活性剂 聚硅氧烷 Β-环糊精 

分 类 号：O634.41[理学—高分子化学]