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xiaoxi8938

铜虫 (小有名气)

应助: 0 (幼儿园)
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虫号: 580618
注册: 2008-07-11

[交流] 【求助】水凝胶求助

各位虫友，本人刚刚接触高分子，做的是光合成聚丙烯酰胺水凝胶，但参照文献老是做不出来，大家能不能给点建议或推荐些文献啊，最好是用便宜一点的原料就能合成的，小女子在此谢过大家啦！

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1楼 2009-06-16 10:27:56

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

wargod2008

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虫号: 592134
注册: 2008-09-03
性别: GG
专业: 生物医用高分子材料

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xiaoxi8938(金币+2):谢谢参与

做光引发聚合是需要光引发剂的。我做过的！做过N-异丙基丙烯酰胺的聚合！很简单，光引发剂、单体、溶剂、交联剂已经特定波长的光源就可以了。下面是我发的一篇文章上的具体做法（光引发剂是2,2′-dimethoxy-2-phenylacetophe-none(DMPAP)）：
Preparation of Hydrogels. The polymerization of the novel PNIPAAm hydrogel wasi nitiated by thephotoinitiator (DMPAP). Particular amounts of NIPAAm, P(NIPAAm-co-UA)-NHCOCHdCH2, and the crosslinker, BIS, were dissolved in mixed solvent (distilledwater/NMP) to obtain a clear solution.The feed compostions of the monomers and othe rreactants are listed in Table1. The monomer solution was irradiated by a portable long-wavelength UV lamp (356nm,16W）at room temperature (22°C)for 24h. The resulted PNIPAAm hydrogel was taken out and immersed indistilled water to leach out the unreacted chemicals for 3 days. During this period, the distilled water was replaced with fresh water every 4h.The hydrogels prepared were labeled as Gelx,where x means the amount of the macromonomer P(NIPAAm-co-UA)-NHCOCHdCH2. Herein, the conventional PNIPAAm hydrogel was used as a control and designated as CGel, which was fabricated under thesame condition without the macromonomer. The hydrogels were cut into disks with a 10mm diameter and a 8mm thickness for the following characterizations.

具体的文章：Xu XD, Zhang XZ et al. Strategy to Introduce a Pendent Micellar Structure intoPoly(N-isopropylacrylamide) Hydrogels. Langmuir 2007, 23, 4231-4236.

祝楼主成功啊！