Results 211 to 220 of about 9,571 (263)

Preparation and Characterization of Photo-Cross-Linked Thermosensitive PNIPAAm Nanogels

Macromolecules, 2006
Thermosensitive nanogels were prepared from photo-cross-linkable copolymers of N-isopropyl-acrylamide (NIPAAm) and 2-dimethylmaleinimido ethylacrylamide (DMIAAm). The colloidal nanogels were formed by UV-irradiated solutions of thermosensitive polymers in water at 45 °C.
Ruckling, D., Vo, C. D., Adler, H. J P, Völkel, A., Cölfen, H.   +4 more
openaire   +3 more sources

Temperature-responsive collagen–PNIPAAm conjugate: preparation and fibrillogenesis

New Journal of Chemistry, 2020
A collagen–PNIPAAm conjugate is prepared using the “grafting from” method under mild conditions, and fibrillogenesis was realized by the induction of natural collagen.
Juntao Zhang, Fen Deng, Wei Liu, Yaozhi Huang, Xiao Tu, Huizhi Kou, Lang He, Benmei Wei, Chengzhi Xu, Haibo Wang   +9 more
openaire   +1 more source

Determination of the Optical Properties of PNIPAAm Gels Used In Biological Applications

Therapeutic Laser Applications and Laser-Tissue Interactions IV, 2009
Poly(N-isopropylacrylamide) i.e. PNIPAAm is a temperature sensitive smart material which displays a lower critical solution temperature (LCST) at 33–35°C. At the lower critical solution temperature, the gel changes from hydrophilic to hydrophobic which has significant consequences in cell culturing.
A. Singh, A. E. Karsten, I. Mputle, A. Chetty, Kersch Naidoo   +4 more
openaire   +1 more source

Fabrication and characterization of microgel-impregnated, thermosensitive PNIPAAm hydrogels

Polymer, 2005
Abstract Poly(N-isopropylacrylamide)/poly(ethylene glycol) diacrylate (PNIPAAm/PEG-DA) microgels were used as an additive during the polymerization and/or crosslinking of PNIPAAm hydrogels to improve their thermosensitive properties. The influence of this additive on the property of resulting PNIPAAm hydrogels was investigated and characterized.
Xian-Zheng Zhang, Chih-Chang Chu
openaire   +1 more source

Thermo-sensitive hydrogels membranes from PAAm networks and entangled PNIPAAm: effect of temperature, cross-linking and PNIPAAm contents on the water uptake and permeability

Reactive and Functional Polymers, 2004
Abstract In this work is presented an alternative route for preparation of membranes from thermo-sensitive hydrogels based on polyacrylamide (PAAm), network having poly(N-isopropylacrylamide) (PNIPAAm) entangled. The hydrogels were chemically synthesized by radical polymerisation using sodium persulfate as initiator.
Guilherme, Marcos Rogério, Da Silva, Rodrigo Cardoso, Rubira, Adley F., Geuskens, Georges, Muniz, Edvani C.   +4 more
openaire   +2 more sources

Dextran-grafted-PNIPAAm as an artificial chaperone for protein refolding

Biochemical Engineering Journal, 2006
A temperature stimuli-responsive polymer, dextran-grafted-PNIPAAm (DGP), was prepared by radical polymerization using cerium nitrate as the initiator. The structure and the grafting ratio of DGP were determined by FT-IR and elemental analysis. The temperature-stimuli responsive behavior of DGP and the size of the DGP self-assemblies at different ...
Diannan Lu, Zhixia Liu, Minlian Zhang, Xiaogong Wang, Zheng Liu   +4 more
openaire   +1 more source

Thermo-responsive PNIPAAm-b-PLA amphiphilic block copolymer micelle as nanoplatform for docetaxel drug release

Journal of Materials Science, 2022
Soheila Ghasemi, Leila Ahmadi, Fatemeh Farjadian   +2 more
semanticscholar   +1 more source

Advancement in cellulose-based multifunctional high conductive PNIPAAm/PPy hydrogel/cotton composites for EMI shielding

Cellulose, 2022
Zhicai Yu, Yuhang Zhao, Jinru Liu, Yushu Wang, Yi Qin, Zhenyu Zhu, Cong Wu, Jiacheng Peng, Hualing He   +8 more
semanticscholar   +1 more source

The mechanism of PNIPAAm-assisted refolding of lysozyme denatured by urea

Biochemical Engineering Journal, 2005
Abstract The molecular interaction of a temperature stimuli-responsive polymer, poly-N-isopropyl acrylamide (PNIPAAm), with lysozyme of different status was studied with an emphasis on the application of PNIPAAm for protein refolding. The refolding of lysozyme was performed by directly diluting denatured lysozyme into a refolding buffer containing ...
Diannan Lu, Zhixia Liu, Minlian Zhang, Zheng Liu, Haimeng Zhou   +4 more
openaire   +1 more source

Novel Biodegradable and Thermosensitive Dex‐AI/PNIPAAm Hydrogel

Macromolecular Bioscience, 2003
AbstractThe dextran‐allyl isocyanate/poly(N‐isopropylacrylamide) (Dex‐AI/PNIPAAm) hydrogel was designed and prepared by copolymerization of the modified dextran with N‐isopropylacrylamide (NIPAAm). This novel Dex‐AI/PNIPAAm hydrogel is biodegradable and intelligent due to its biodegradable dextran linkage and thermosensitive PNIPAAm moiety.
Xian‐Zheng Zhang, Da‐Qing Wu, Guo‐Ming Sun, Chih‐Chang Chu   +3 more
openaire   +1 more source