http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Poly(ethyleneoxide-propyleneoxide-ethyleneoxide) 하이드로겔의 유변학적 특성 연구
최민훈,강전태,김덕기,김성훈,Choi, Min-Hoon,Kang, Jun-Tae,Kim, Duk-Ki,Kim, Seong-Hun 한국섬유공학회 2009 한국섬유공학회지 Vol.46 No.4
Hydrogel is prepared using triblock copolymer of poly(ethyleneoxide-propyleneoxide-ethyleneoxide) with different block contents. Each hydrogel showed different rheological and thermal behavior according to the conditions of gelation such as solution temperature, the content of block copolymer, and block ratio between ethylene oxide and propylene oxide. In this hydrogel system, poly(propyleneoxide) and poly(ethyleneoxide) acted as hydrophobic and hydrophilic domains, respectively. In aqueous solution, block copolymer acts as a surfactant, and then formed micelles due to the hydrophilic-lyophobic balance. These micelles aggregated and formed a lattice structure. In temperature sweeping using Rheometer, transition of aqueous block copolymer solution was developed from a liquid state through soft-gel state to hard-gel state as increasing temperature. Hydrogels with different block ratio of PPO and PEO represent different sol-gel and gel-sol transition point.