聚偏氟乙烯/聚丙烯复合型疝气补片的制备

Preparation of polyvinglidene fluoride/polypropylene compound hernia patches

利用等离子体改性对普通聚丙烯(PP)织物进行表面处理,然后在织物表面涂覆氟橡胶黏合剂,并将其与聚偏氟乙烯(PVDF)静电纺纤维薄膜毡复合,研究了聚偏氟乙烯/聚丙烯复合型疝气补片的制备方法。结果表明:利用氦气对PP织物进行等离子体处理可提高其亲水性能;处理后PP织物表层的氧含量增加,碳含量降低,亲水性增强;最佳的等离子体改性参数为功率150 W,处理时间2 min。PP织物与PVDF纤维薄膜毡复合后,断裂强度增大,但断裂伸长率和厚度基本保持不变;复合补片的水通量为11.73 mL/min,能满足体液的正常传输;复合补片在温度为50℃以下无明显收缩,从尺寸稳定性角度来说用于人体是安全的。

A new kind of compound hernia patches made of polypropylene （PP） and polyvinglidene fluoride （PVDF） are prepared.The steps are as follows：first,surface modification of PP fabric was carried out by plasma,and then the modified PP fabric was coated with fluroelastomer,and finally it was compounded with the PVDF microfiber membrane which had been prepared by eletrospinning.The results showed that helium plasma treatment of PP fabric improves its hydrophilicity,increases the oxygen content on the fabric surface,and decreases the carbon content.The optimized plasma treatment parameters are 150 W and 2 mins.The compound product of the above PP and PVDF exhibits a higher breaking strength,with elongation at break and thickness essentially unchanged.The water flux of the compound hernia patch is 11.73 mL/min,which means the patch can satisfy the normal transmission of body fluids,and no obvious shrinking of the patch is observed below 50 ℃,so from the perspective of dimensional stability,it is safe for human.