竹浆纤维ATRP表面改性方法的研究

Study on Surface Modification of Bamboo Pulp Fibers Through ATRP

以硫酸盐漂白竹浆纤维为原料,2-溴异丁酰溴酰化竹浆纤维,通过对不同反应温度和不同打浆度竹浆纤维制备的大分子引发剂比较分析,确定了最佳的大分子引发剂制备方案。应用原子转移自由基聚合(ATRP)和电子活化再生原子转移自由基聚合(AGETATRP)两种方法对竹浆纤维进行了表面接枝改性,通过对接枝后产物的比较,发现采用AGETATRP法对竹浆纤维进行改性具有较好的效果。最后通过研究AGETATRP反应的单体的浓度、催化剂的含量、反应的时间以及温度对改性后产物产量的影响,确定了最佳的改性条件。

The kraft bamboo pulp fibers were used as raw material.2-Bromoisobutyryl bromide（BIBB）was applied to acylate bamboo pulp fiber.This paper conducted comparative analysis of macroinitiator prepared under different reaction temperatures and different beating degrees and cofirmed the optimal macroinitiator preparation scheme.Surface grafting modification was carried out for bamboo pulp fiber by application of atom transfer radical polymerization（ATRP）and electron transfer atom transfer radical polymerization（AGETATRP）.Through comparing the grafted products,it is found that AGETATRP method is better than ATRP in the modifying process.The best modification conditions are finally confirmed through studying effects of monomer concentration,catalyst concentration,reaction time and temperature on modified products.