不清楚，幫頂

自己做個(gè)DSC測(cè)吧，不同型號(hào)的有差別

聚N-異丙基丙烯酰胺單鏈附聚體的制備及玻璃化轉(zhuǎn)變行為的研究
2007年全國(guó)高分子學(xué)術(shù)論文報(bào)告會(huì)（2007.10.9-13 成都）

謝謝大家頂貼

最好自己做一下測(cè)試啊，因?yàn)椴煌�的聚合度有差異的，�?0左右吧，可以用DSC,TG,DMA等測(cè)一下

Poly(N-isopropylacrylamide) (variously abbreviated PNIPA, PNIPAAm, PNIPAA or PNIPAm) is a temperature-responsive polymer that was first synthesized in the 1950s.[1]

It forms a three-dimensional hydrogel when crosslinked with N,N’-methylene-bis-acrylamide (MBAm) or N,N’-cystamine-bis-acrylamide (CBAm). When heated in water above 33°C, it undergoes a reversible phase transition from a swollen hydrated state to a shrunken dehydrated state, losing about 90% of its mass. Since PNIPAm expels its liquid contents at a temperature near that of the human body, PNIPAm has been investigated by many researchers for possible applications in controlled drug delivery.[2][3]

呵呵，英文不是很好，是不是說明玻璃化轉(zhuǎn)變溫度為33℃�。繌木S基百科上找到的，不知道對(duì)不對(duì)哦^_^

https://en.wikipedia.org/wiki/Poly(N-isopropylacrylamide)

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