State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China. yanli
Colloids Surf B Biointerfaces. 2011 Jul 1;85(2):125-30. doi: 10.1016/j.colsurfb.2011.02.007. Epub 2011 Feb 21.
Surfaces of amphiphilic phosphorylcholine polymer (PC1036) prepared by spin-coating were characterized by spectroscopic ellipsometry, water contact angle and atomic force microscopy. The antifouling properties of the PC1036 films to marine benthic diatom Nitzschia closterium MMDL533 were also investigated. The results showed that the dry PC1036 film promoted the adhesion of N. closterium MMDL533 because the hydrophobic lauryl groups were present in the film surface. The 2 h-swelled PC1036 films had excellent anti-fouling properties with extremely low attachment densities and retention densities no matter what the annealing temperature was. The thickness of the coated films lower than 147 Å had a profound effect on the film anti-fouling properties. Otherwise, when the film thickness was higher than that value, there was no more improvement of diatom cell reduction observed. The annealing temperature had only a little effect on the film resistant to diatom adhesion, which might be attributed to two factors including the PC group packing densities in the outer PC layer and the equilibrated water volume fraction in the 2 h-swelled PC1036 films.
通过旋涂法制备的两亲性磷酸胆碱聚合物（PC1036）表面的特性通过光谱椭圆偏振法、水接触角和原子力显微镜进行了表征。还研究了 PC1036 薄膜对海洋底栖硅藻 Nitzschia closterium MMDL533 的抗污性能。结果表明，由于薄膜表面存在疏水性月桂基基团，干燥的 PC1036 薄膜促进了 N. closterium MMDL533 的附着。2 h 溶胀的 PC1036 薄膜具有极好的抗污性能，附着密度和保留密度极低，无论退火温度如何。涂层厚度低于 147 Å 对薄膜的抗污性能有很大影响。否则，当膜厚高于该值时，观察到的硅藻细胞减少没有进一步改善。退火温度对薄膜抵抗硅藻附着的影响很小，这可能归因于两个因素，包括外层 PC 层中 PC 基团的堆积密度和 2 h 溶胀的 PC1036 薄膜中平衡水的体积分数。
