聚丙烯本体熔融/表面接枝聚已内酯的研究
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摘要
聚己内酯是一种人工合成的可生物降解的聚合物，它不但具有优良的生物相容性、药物通透性，而且和许多高分子材料具有良好的相容性。本论文主要研究聚己内酯对通用的高分子材料进行改性，研究内容主要分为以下几个部分：聚丙烯熔融接枝聚己内酯；聚丙烯膜表面接枝聚己内酯；聚对苯二甲酸乙二醇酯(PET)膜表面接枝聚己内酯。
1．聚丙烯由于不带有极性的基团，和很多极性高分子材料的相容性差，而聚己内酯则和许多高分子材料具有良好的相容性。关于聚丙烯接枝聚己内酯的研究目前不多，在仅有的研究中均存在一些不足，或是方法繁琐、复杂，或是采用的原料不易获得。本论文中，以ε-己内酯作为接枝聚合的单体，采用熔融接枝的方法制备了聚丙烯接枝聚己内酯共聚物(PP-g-PCL)。此方法的优势明显：反应体系简单，没有引入任何催化剂，便于实施工业化。经红外光谱(FTIR)、核磁共振氢谱(~1H NMR)分析，证明了PP-g-PCL的结构；采用红外光谱法测定接枝率。研究表明，接枝率随着单体浓度的增加、反应时间的延长以及反应温度的升高而增加；通过对反应规律的研究，最终得出反应温度为230℃，反应时间为1小时是接枝反应的最佳条件。X-射线衍射结果证明，接枝到聚丙烯上的聚己内酯没有结晶，也没有改变聚丙烯的晶体结构。对接枝聚合物进行热失重分析表明，聚己内酯的引入并没有降低聚丙烯的使用温度。这些均说明
Polycaprolactone (PCL) is a kind of biodegradable aliphatic polyester. It has been widely used in tissue engineering, bone fixation, and controlled drug delivery due to its biocompatible and a high permeability to drugs. Here, our work focused on the modification of common polymer materials with PCL. The research included that: grafting of PCL on polypropene (PP) by melt-grafting; grafting of PCL on the surface of PP film; and grafting of PCL on the surface of PET film.
1. Traditionally, PP forms very poor immiscible blend with other polymers because it has no chemical functionalities; while PCL can form truly miscible blend with numerous polymers. Therefore, PP grafted with PCL would potentially be an extremely useful compatibilizer for many different PP blend combinations. But the studies about grafting PCL on PP were few up to now. The methods to prepare PP-g-PCL had some defects, for example, their process were very complex, or the special functionalized PP matrix was not
1．聚丙烯由于不带有极性的基团，和很多极性高分子材料的相容性差，而聚己内酯则和许多高分子材料具有良好的相容性。关于聚丙烯接枝聚己内酯的研究目前不多，在仅有的研究中均存在一些不足，或是方法繁琐、复杂，或是采用的原料不易获得。本论文中，以ε-己内酯作为接枝聚合的单体，采用熔融接枝的方法制备了聚丙烯接枝聚己内酯共聚物(PP-g-PCL)。此方法的优势明显：反应体系简单，没有引入任何催化剂，便于实施工业化。经红外光谱(FTIR)、核磁共振氢谱(~1H NMR)分析，证明了PP-g-PCL的结构；采用红外光谱法测定接枝率。研究表明，接枝率随着单体浓度的增加、反应时间的延长以及反应温度的升高而增加；通过对反应规律的研究，最终得出反应温度为230℃，反应时间为1小时是接枝反应的最佳条件。X-射线衍射结果证明，接枝到聚丙烯上的聚己内酯没有结晶，也没有改变聚丙烯的晶体结构。对接枝聚合物进行热失重分析表明，聚己内酯的引入并没有降低聚丙烯的使用温度。这些均说明
Polycaprolactone (PCL) is a kind of biodegradable aliphatic polyester. It has been widely used in tissue engineering, bone fixation, and controlled drug delivery due to its biocompatible and a high permeability to drugs. Here, our work focused on the modification of common polymer materials with PCL. The research included that: grafting of PCL on polypropene (PP) by melt-grafting; grafting of PCL on the surface of PP film; and grafting of PCL on the surface of PET film.
1. Traditionally, PP forms very poor immiscible blend with other polymers because it has no chemical functionalities; while PCL can form truly miscible blend with numerous polymers. Therefore, PP grafted with PCL would potentially be an extremely useful compatibilizer for many different PP blend combinations. But the studies about grafting PCL on PP were few up to now. The methods to prepare PP-g-PCL had some defects, for example, their process were very complex, or the special functionalized PP matrix was not
引文
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