𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Temperature-Sensitive Poly(N-isopropylacrylamide) Hydrogels with Macroporous Structure and Fast Response Rate

✍ Scribed by Jian-Tao Zhang; Si-Xue Cheng; Shi-Wen Huang; Ren-Xi Zhuo

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
148 KB
Volume
24
Category
Article
ISSN
1022-1336

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Macroporous temperature‐sensitive poly(N‐isopropylacrylamide) (PNIPA) hydrogels were prepared by a novel phase‐separation technique to improve the response properties. In comparison with a conventional PNIPA hydrogel prepared in water, these macroporous hydrogels, prepared by polymerization in aqueous sucrose solutions, have higher swelling ratios at temperatures below the lower critical solution temperature and exhibit much faster response rates to temperature changes.

Scanning electron microscopy image of the surface of a PNIPA hydrogel, prepared in 1.50 M aqueous sucrose solution.

magnified imageScanning electron microscopy image of the surface of a PNIPA hydrogel, prepared in 1.50 M aqueous sucrose solution.

📜 SIMILAR VOLUMES

Macroporous poly(N-isopropylacrylamide)
Macroporous poly(N-isopropylacrylamide) hydrogels with fast response rates and improved protein release properties
✍ Cheng, Si-Xue ;Zhang, Jian-Tao ;Zhuo, Ren-Xi 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 328 KB

## Abstract A series of temperature‐sensitive poly(N‐isopropylacrylamide) (PNIPA) hydrogels with large pore size and fast response were prepared by carrying out polymerizations in aqueous sodium chloride solutions with different concentrations. In comparison with conventional PNIPA hydrogels, the P

Temperature-Sensitive Polyamidoamine Den
Temperature-Sensitive Polyamidoamine Dendrimer/Poly(N-isopropylacrylamide) Hydrogels with Improved Responsive Properties
✍ Jian-Tao Zhang; Shi-Wen Huang; Ren-Xi Zhuo 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 89 KB

## Abstract **Summary:** Novel temperature‐sensitive poly(__N__‐isopropylacrylamide)/amine‐terminated polyamidoamine dendrimer G6‐NH~2~ hydrogels with fast responsive properties were synthesized by forming semi‐interpenetrating polymeric networks. In contrast to the conventional PNIPA hydrogel, the

Synthesis of Temperature-Sensitive Poly(
Synthesis of Temperature-Sensitive Poly(N-isopropylacrylamide) Hydrogel with Improved Surface Property
✍ Xianzheng Zhang; Renxi Zhuo 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 51 KB

A new PNIPA hydrogel was synthesized by carrying out the polymerization in the gelated corn starch aqueous solution. This PNIPA hydrogel has an improved surface property and does not form the disadvantageous bubbles during the shrinking process. This change is due to the hydrogen bonds between the c

Preparation and Characterization of Nove
Preparation and Characterization of Novel Temperature Sensitive Poly(N-isopropylacrylamide-co-acryloyl beta-cyclodextrin) Hydrogels with Fast Shrinking Kinetics
✍ Jian-Tao Zhang; Shi-Wen Huang; Ren-Xi Zhuo 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 184 KB

## Abstract **Summary:** Novel temperature sensitive poly(__N__‐isopropylacrylamide‐__co__‐acryloyl beta‐cyclodextrin) (P(NIPA‐__co__‐A‐CD)) hydrogels with fast shrinking rates were prepared by radical polymerization of NIPA, A‐CD and crosslinker in a mixture of water/1,4‐dioxane as solvent. Becaus