两亲性分子在HDPE表面的包埋及持久的亲水改性  

Hydrophilic improvement and water immersion durability of the HDPE surface by the entrapping with the amphiphilic modifier

作　　者：常孟 卢强[1] 黄健[1] 王晓琳[2] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]清华大学化学工程系,北京100084

出　　处：《南京工业大学学报（自然科学版）》2017年第4期43-47,共5页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家重点基础研究发展计划(973计划)(2009CB623404);国家自然科学基金(20776068)

摘　　要：以疏水端含双键的两亲性分子油酸聚乙二醇酯(OEO-5)为改性剂,并在溶胀表面引入引发剂偶氮二异丁腈(AIBN),对高密度聚乙烯(HDPE)表面进行了包埋改性。X线衍射仪(XRD)和扫描电子显微镜(SEM)的结果表明,溶胀层位于HDPE表面的无定形区。溶胀度越高,改性表面的接触角越低,溶胀度16.3%时的接触角达到了15.3°。改性表面浸水5周后,其接触角仍保持在47.0°,显示了良好的亲水稳定性。AIBN及双键的引入有利于两亲分子包埋改性表面亲水稳定性的改善。An entrapping modification was carried out on the high-density polyethylene （HDPE） surface by applying the poly （ethylene oxide ） monooleate （ OEO-5） modifier and introducing 2,2＇- azobisisobutyronitrile（ AIBN） initiator into the swollen HDPE surface.By X-ray diffraction （ XRD） and scanning electron microscopy （ SEM）, a swelling layer was proved to locate in the amorphous region on the swollen HDPE surface,from which the modifier could penetrate into the surface. Therefore, a higher swelling degree would facilitate modifier entrapment into the surface.The lowest contact angle of 15. 3° was reached on the surface based on the highest swelling degree of 16. 3%.Benefiting from introduction of AIBN and the double bond of OEO-5, excellent water immersion durability was exhibited on the modified surface with a lower contact angle of 47. 0°even after 5 weeks of water contact.

关 键 词：表面包埋改性 两亲性分子 表面溶胀 亲水稳定性 高密度聚乙烯 

分 类 号：TB324[一般工业技术—材料科学与工程]