Basing on hydroxyl terminated hyperbranched poly(amine-ester)s(HPAEs),the cross-linking reactions and preparation of ester-crosslinked HPAE films were inves-tigated using succine anhydride(SA)as crosslink reagent.It w...Basing on hydroxyl terminated hyperbranched poly(amine-ester)s(HPAEs),the cross-linking reactions and preparation of ester-crosslinked HPAE films were inves-tigated using succine anhydride(SA)as crosslink reagent.It was proved that the cross-linking reaction between HPAE and SA followed a two-step mechanism.This mechanism provides an efficient route to prepare HPAE/SA cross-linked films,in which,the precursor films were prepared by casting HPAE/SA solution at a lower temperature,and then curing the films at a higher temperature.By varying SA content,the solid HPAE/SA films with different cross-linking degrees were prepared successfully.The highest tensile strength of the cross-linked film could reach 59.60 MPa.With all water contact angle smaller than 74.3°,the crosslinked films demonstrated good hydrophilic properties.展开更多
基金This paper is financially supported by the National Natural Science Foundation of China(Grant No.50103010)China Postdoctoral Science Foundation(No.20060400338)the State Key Development Program for Basic Research of China(Grant No.2003.CB615705).
文摘Basing on hydroxyl terminated hyperbranched poly(amine-ester)s(HPAEs),the cross-linking reactions and preparation of ester-crosslinked HPAE films were inves-tigated using succine anhydride(SA)as crosslink reagent.It was proved that the cross-linking reaction between HPAE and SA followed a two-step mechanism.This mechanism provides an efficient route to prepare HPAE/SA cross-linked films,in which,the precursor films were prepared by casting HPAE/SA solution at a lower temperature,and then curing the films at a higher temperature.By varying SA content,the solid HPAE/SA films with different cross-linking degrees were prepared successfully.The highest tensile strength of the cross-linked film could reach 59.60 MPa.With all water contact angle smaller than 74.3°,the crosslinked films demonstrated good hydrophilic properties.
