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首页> 外文会议>International Materials Research Congress >Synthesis of Biodegradable Copolymer of Poly(isobutyl vinyl ether)-co-Poly(ε-Caprolactone) using Half-Sandwich Metallocene Catalyst and their Application as Plasticizer for Poly(Vinyl Chloride)
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Synthesis of Biodegradable Copolymer of Poly(isobutyl vinyl ether)-co-Poly(ε-Caprolactone) using Half-Sandwich Metallocene Catalyst and their Application as Plasticizer for Poly(Vinyl Chloride)

机译：利用半夹心茂金属催化剂合成聚（异丁基乙烯基醚）-CO-聚（ε-己内酯）的可生物降解共聚物及其作为聚（氯乙烯）增塑剂的应用

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摘要

In this work, we studied the synthesis of biodegradable copolymers of the type poly(isobutyl vinyl ether)-co-(ε-caprolactone) (PIBVE-co-PCL) using a homogeneous mono-cyclopentadienyltitanium catalyst and methylaluminoxane (MAO) as co-catalyst. These copolymers can also be used as plasticizers for flexible poly(vinyl chloride) (PVC), improving its thermal properties. The copolymer PIBVE-co-PCL could be synthesized with a high conversion (>90%). The use of 39 wt.% of the copolymer in the formulation of PVC decreases its glass transition temperature (T_g) by -6.51 °C. By varying the copolymer composition it is possible to obtain PVC with different T_g values that could be used for different applications. A particular application where one could use this type of copolymer is in PVC formulations for the fabrication of blood bags. The toxicity of dioctyl phthalate (DOP), which is the more commonly used plasticizer for PVC, limits the use of these formulations for the mentioned purpose. The PVC plasticized with the biodegradable copolymer showed an increase in the degradation temperature, improving the thermal stability of the PVC formulation in comparison with the phthalates usually used as plasticizers.
机译：在这项工作中，我们研究了使用均相单环戊二烯基催化剂和甲基铝氧烷（MAO）的聚（异丁内酯）-CO-（己内酯）（PiBVE-COS）（PiBVE-CO-PCL）的可生物降解共聚物的合成作为共同催化剂。这些共聚物也可用作柔性聚（氯乙烯）（PVC）的增塑剂，改善其热性能。共聚物PiBve-Co-PCL可以用高转化率（> 90％）合成。使用39重量％的PVC中的共聚物％将其玻璃化转变温度（T_g）降低-6.51℃。通过改变共聚物组合物，可以获得具有可用于不同应用的不同T_G值的PVC。一种可以使用这种类型的共聚物的特定应用是用于制造血袋的PVC制剂中。邻苯二甲酸二邻酯（DOP）的毒性，其是PVC更常用的增塑剂，限制了这些配方的使用。用可生物降解的共聚物塑化的PVC显示出降解温度的增加，与通常用作增塑剂的邻苯二甲酸盐相比，改善了PVC制剂的热稳定性。

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