目的以二氧化硅为核、聚甲基丙烯酸甲酯为刷制备球形高分子刷,考察其作为包装纸防潮涂料主要成膜物质的性能。方法采用"从表面接枝"技术,通过引发剂引发单体聚合生成甲基丙烯酸甲酯球形刷,利用FTIR和TEM对球形高分子刷的结构...目的以二氧化硅为核、聚甲基丙烯酸甲酯为刷制备球形高分子刷,考察其作为包装纸防潮涂料主要成膜物质的性能。方法采用"从表面接枝"技术,通过引发剂引发单体聚合生成甲基丙烯酸甲酯球形刷,利用FTIR和TEM对球形高分子刷的结构及形态进行表征,并考察其作为涂料成膜物质的应用性能。结果合成的球形高分子刷具有良好的耐水性能,且在固含量达到40%以上时仍具有较低的粘度(64 m Pa?s)。结论该球形高分子刷具有高固低粘包装纸防潮涂料的应用价值。展开更多
The well defined core-shell polymer brush with poly(N-isopropylacrylamide) as shell was investigated by dynamic laser light scattering.Compared with the isolated three-dimensional chain,the grafted PNIPAM chains have ...The well defined core-shell polymer brush with poly(N-isopropylacrylamide) as shell was investigated by dynamic laser light scattering.Compared with the isolated three-dimensional chain,the grafted PNIPAM chains have a broader range in thickness change with a decrease in solvent quality due to the interchain interaction in spherical geometry.With the increasing of the molecule weight of the PNIPAM,the phase transition of grafted chain change from single transition to two stage transition.At T = 250C,the <L>shell can be scale to N as <L>shell∝N0.9±0.1.With increasing of the temperature,the exponential of scaling law of <L>shell and N decrease a little.However,the PNIPAM chains still expand with <L>shell ∝N0.76±0.10 due to the high grafted chain density.展开更多
文摘目的以二氧化硅为核、聚甲基丙烯酸甲酯为刷制备球形高分子刷,考察其作为包装纸防潮涂料主要成膜物质的性能。方法采用"从表面接枝"技术,通过引发剂引发单体聚合生成甲基丙烯酸甲酯球形刷,利用FTIR和TEM对球形高分子刷的结构及形态进行表征,并考察其作为涂料成膜物质的应用性能。结果合成的球形高分子刷具有良好的耐水性能,且在固含量达到40%以上时仍具有较低的粘度(64 m Pa?s)。结论该球形高分子刷具有高固低粘包装纸防潮涂料的应用价值。
文摘The well defined core-shell polymer brush with poly(N-isopropylacrylamide) as shell was investigated by dynamic laser light scattering.Compared with the isolated three-dimensional chain,the grafted PNIPAM chains have a broader range in thickness change with a decrease in solvent quality due to the interchain interaction in spherical geometry.With the increasing of the molecule weight of the PNIPAM,the phase transition of grafted chain change from single transition to two stage transition.At T = 250C,the <L>shell can be scale to N as <L>shell∝N0.9±0.1.With increasing of the temperature,the exponential of scaling law of <L>shell and N decrease a little.However,the PNIPAM chains still expand with <L>shell ∝N0.76±0.10 due to the high grafted chain density.