Hydrophobic modification of polymer surfaces via "grafting to" approach
Hydrophobic modification of polymer surfaces via "grafting to" approach
复制标题
DOI：
10.1080/00222340601044326
复制
发表时间：
2007-01-01
影响因子：
1.4
通讯作者：
Luzinov, Igor
中科院分区：
文献类型：
--
作者：
Burtovyy, Oleksandr;Klep, Viktor;Luzinov, Igor
用空气等离子体和聚甲基丙烯酸缩水甘油酯（PGMA）锚定层修饰的聚对苯二甲酸乙酯（PET）和尼龙基底上永久锚定疏水接枝聚合物层。采用端羧基不同分子量的聚五氟苯乙烯（PPFS）进行接枝。原子力显微镜成像显示，一般情况下，接枝链均匀地覆盖所有衬底。接枝层厚度随接枝温度和接枝时间的增加而增加。为了达到显著的接枝水平，从而达到140℃以上的高疏水性温度，必须使用5分钟的接枝时间。当接枝时间较长（I h）时，在120℃下可达到疏水性，接枝层厚度至少为2 ~ 3 nm，以获得较高的水接触角。所开发的聚合物接枝技术可以很容易地应用于纤维和纺织品的表面改性，从而产生疏水纤维材料。
Hydrophobic grafted polymer layers were permanently anchored from the melt onto poly(ethylene terephthalate) (PET) and nylon substrates modified with air plasma and poly(glycidyl methacrylate) (PGMA) anchoring layer. Polypentafluorostyrene (PPFS) of different molecular weights with an end carboxyl group was used for the grafting. Atomic force microscopy imaging revealed that, in general, the grafted chains evenly covered all substrates. Thickness of the grafted layer increased with temperature and time of grafting. To reach a significant level of grafting and consequently high hydrophobicity temperature above 140 degrees C, 5 min of grafting had to be used. For longer grafting time (I h) the hydrophobicity could be reached at 120 degrees C. The thickness of the grafted layer should be at least 2-3 nm to attain the high water-contact angle. The polymer grafting technique developed could be readily applied to surface modification of fibers and textiles leading to generation of hydrophobic fibrous materials.