Department of Materials Science and Engineering, National University of Singapore , 9 Engineering Drive 1, 117576 Singapore.
Langmuir. 2013 Nov 19;29(46):14307-13. doi: 10.1021/la403432y. Epub 2013 Nov 6.
Amphiphilic conetworks (APCNs), consisting of hydrophilic poly[poly(ethylene glycol) methyl ester acrylate] (PPEGMEA) and hydrophobic stereocomplex of poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA), were prepared by free radical copolymerization of PEGMEA with acrylate macromonomer of the PLA stereocomplex. The effects of stereocomplexation and the amount of PLA stereocomplex on the rheology properties of APCNs were investigated. The results indicated that the APCNs was stronger in the presence of stereocomplexation compared with the that of nonstereocomplex system, and the strength of the APCNs increased with the increasing of the amount of PLA stereocomplex. The storage modulus of the APCNs could be easily tuned from 1200 to 4300 Pa by incorporating 2-10% of stereocomplex PLA. On the other hand, the swelling behavior of APCNs decreased with the increasing content of hydrophobic PLA cross-linker.
两亲性超分子网络（APCNs）由亲水性聚[聚（乙二醇）甲基丙烯酸酯]（PPEGMEA）和疏水性聚（L-丙交酯）（PLLA）和聚（D-丙交酯）（PDLA）的立体复合物组成，通过 PEGMEA 与 PLA 立体复合物的丙烯酸酯大分子单体的自由基共聚制备。研究了立体复合物和 PLA 立体复合物的量对 APCNs 流变性能的影响。结果表明，与非立体复合物体系相比，存在立体复合物时 APCNs 的强度更强，并且随着 PLA 立体复合物量的增加，APCNs 的强度增加。通过掺入 2-10%的立体复合物 PLA，APCNs 的储能模量可以很容易地从 1200 调整到 4300 Pa。另一方面，APCNs 的溶胀行为随疏水性 PLA 交联剂含量的增加而降低。
