基于竹塑复合材料的竹浆纤维ATRP表面改性的研究

发布时间：2018-05-07 11:39

本文选题：竹纤维复合材料 + ATRP　；参考：《浙江理工大学》2015年硕士论文

【摘要】：塑料作为一种应用范围广、使用量巨大的材料，已经渗透到生活的各个方面。随着社会的进一步发展，对塑料的性能提出了更高的要求，单一的塑料往往不能满足使用要求，复合材料由于具有更多更全面的性能而由此应运而生。尽管塑料之间的复合能够提高塑料的性能，然而在来源、价格、废弃物回收利用降解方面存在着复杂的问题。因此，发展全新的复合材料是时代赋予我们的新课题。植物纤维复合材料具有来源广泛、价格低廉、并且易降解的优点，用植物纤维复合材料代替传统塑料将是当今复合材料行业的发展趋势。竹子作为一种天然的结构复合材料，具有防水性好、强度高、弹性好、比重小、价格便宜、生长速度快的优点。因此竹纤维复合材料将成为一种亟待开发应用的新材料。本文以硫酸盐法竹浆纤维为原料，2-溴异丁酰溴酰化竹浆纤维，通过对不同反应温度、不同反应时间和不同打浆度竹浆纤维制备的大分子引发剂比较分析，确定了在本实验的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)两种不同方法对竹浆纤维进行了表面接枝甲基丙烯酸甲酯进行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，反应的时间以及反应的温度对改性后产物产量的影响，确定了比较适合的改性条件。确定适合的的改性条件之后，又进行了在竹浆纤维表面接枝甲基丙烯酸缩水甘油酯和异戊二烯，以扩大竹纤维的接枝应用范围。为以后竹纤维复合材料的制备提供更多的增强体选择。
[Abstract]:Plastics as a wide range of applications, the use of huge materials, has penetrated into all aspects of life. With the further development of society, the performance of plastics has been put forward higher requirements, a single plastic often can not meet the requirements of the use of composite materials because of more and more comprehensive properties came into being. Although the combination of plastics can improve the properties of plastics, there are complex problems in source, price, waste recycling and degradation. Therefore, the development of new composite materials is a new topic given by the times. Plant fiber composites have the advantages of wide source, low price and easy degradation. It will be the development trend of composite materials industry to replace traditional plastics with plant fiber composites. As a natural structural composite, bamboo has the advantages of good waterproof, high strength, good elasticity, small proportion, low price and fast growth rate. Therefore, bamboo fiber composites will become a new material to be developed and applied. In this paper, using Kraft bamboo pulp fiber as raw material, the macromolecular initiators of bamboo pulp fiber prepared by different reaction temperature, different reaction time and different beating degree were compared and analyzed. The best preparation method of macromolecular initiator in this experiment was determined. Two different methods of atom transfer radical polymerization (ATRP) and electron activated regenerated atom transfer radical polymerization (AGETATRP) were used to modify bamboo pulp fiber by grafting methyl methacrylate on the surface. It was found that the modified bamboo pulp fiber by AGETATRP had better effect. Finally, the effects of monomer concentration, catalyst content, reaction time and reaction temperature on the yield of the modified product were studied, and the suitable modification conditions were determined. After the suitable modification conditions were determined, glycidyl methacrylate and isoprene were grafted on the surface of bamboo pulp fiber to expand the application range of bamboo fiber grafting. It provides more choice of reinforcements for the preparation of bamboo fiber composites in the future.
【学位授予单位】：浙江理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB33;TQ351.01

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