情乱莲花村,国产乱子影视频上线免费观看,韩国三级做爰高潮hd色即是空

Adopting inorganic clay (hectorite) and MBA as physical and chemical cross-linking agents,respectively, PNIPAM microgels were synthesized by SFEP. The chemical structure and morphology of the microgels were confirmed by FTIR, WXRD, and SEM. The temperaturesensitivity of the microgels was investigated by DLS and UV spectrophotometers. The results inferred that clay platelets dispersed in an aqueous medium were fully exfoliated and could act as a kind of multifunctional cross-linking agent and significantly reduced the hydrodynamic diameters of the microgels. In fact, the hydrodynamic diameters of the PNIPAM microgels with clay as cross-linker ranged from 154 to 322 nm which was much smaller than that using MBA as chemical cross-linker, the later was in the range of 284–808 nm on heating from 5 to 50⁰C.

私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看