Poly(acrylamide) (PAAm) hydrogels are prepared in the presence of temperature sensitive poly(N-isopropylacrylamide) (PNiPAM) microgels. The microgel particles are incorporated into the macroscopic hydrogel; however, the presence of the particles leads to a slower gelation process and the gel point is shifted to longer reaction times. Elastic properties of the hydrogel become temperature sensitive indicating a partial interpenetration of the PNiPAM microgels by the PAAm network. The hydrogel formation was performed at two temperatures where the PNiPAM microgels were either strongly or weakly swollen. Subsequent temperature changes lead to a change in microgel size and thereby influence the properties of the macroscopic gel. Static light scattering revealed enhanced long range heterogeneities that are temperature dependent in contrast to pure PAAm gels.
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Univ Manchester, Sch Mat, Manchester Mat Sci Ctr, Biomat Res Grp, Manchester M1 7HS, Lancs, EnglandUniv Manchester, Sch Mat, Manchester Mat Sci Ctr, Biomat Res Grp, Manchester M1 7HS, Lancs, England
Thaiboonrod, Sineenat
Milani, Amir H.
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Univ Manchester, Sch Mat, Manchester Mat Sci Ctr, Biomat Res Grp, Manchester M1 7HS, Lancs, EnglandUniv Manchester, Sch Mat, Manchester Mat Sci Ctr, Biomat Res Grp, Manchester M1 7HS, Lancs, England
Milani, Amir H.
Saunders, Brian R.
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Univ Manchester, Sch Mat, Manchester Mat Sci Ctr, Biomat Res Grp, Manchester M1 7HS, Lancs, EnglandUniv Manchester, Sch Mat, Manchester Mat Sci Ctr, Biomat Res Grp, Manchester M1 7HS, Lancs, England
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Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USAUniv Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland
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Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R ChinaSouthwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China
Zheng, Cunchuan
Yan, Chaozong
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Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R ChinaSouthwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China
Yan, Chaozong
Xie, Hu
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PetroChina Xinjiang Oilfield Co, Xinjiang Oilfield Companys First Gas Prod, Karamay, Peoples R ChinaSouthwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China
Xie, Hu
Huang, Lamei
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PetroChina, Peoples Republ China, Res Inst Explorat & Dev, Tarim, Peoples R ChinaSouthwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China
Huang, Lamei
Fu, Haoran
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Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R ChinaSouthwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China
Fu, Haoran
Zhang, Tailiang
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Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China
Oil & Gas Field Appl Chem Key Lab Sichuan Prov, Chengdu, Peoples R ChinaSouthwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China
Zhang, Tailiang
Huang, Zhiyu
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Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China
Oil & Gas Field Appl Chem Key Lab Sichuan Prov, Chengdu, Peoples R ChinaSouthwest Petr Univ, Sch Chem & Chem Engn, Chengdu, Peoples R China