牡蛎壳粉/PVA改性PE填料的表面性能与水处理中挂膜效果研究
Study on Surface Properties and Membrane Hanging Effect of Modified PE Filler by Oyster Shell Powder/PVA
摘要: 本文以亲水性高分子物质增塑聚乙烯醇(PVA)与生物亲和性物质牡蛎壳粉作为原料，采取熔融共混的改性方法对聚乙烯(PE)填料进行改性，制备出2%增塑PVA和10%牡蛎壳粉改性的PE填料，测试改性后的填料静态接触角减少了31.5˚，经过湿热老化后发生韧性断裂，抗冲击强度提高了51.1%，且增塑后的PVA与高分子聚合物具有较好的相容性。挂膜试验显示出改性后的填料挂膜量提高了16.1%，脱氢酶活性提高了35.5%，改性填料具有一定挂膜优势。
Abstract:
In this paper, using hydrophilic polymer plasticized polyvinyl alcohol (PVA) and biocompatible oyster shell powder as raw materials, polyethylene (PE) filler was modified by melting blending method, and 2% plasticized PVA and 10% oyster shell powder modified PE filler were prepared. The static contact angle of the modified filler was reduced by 31.5˚. Ductile fracture occurred after wet heat aging, impact strength increased by 51.1%, and plasticized PVA has good compatibility with polymer. The experimental results showed that the membrane amount and dehydrogenase activity of the modified filler increased by 16.1% and 35.5% respectively, indicating that the modified filler had certain advantages in membrane hanging.
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