PVA/PAAthermo-crosslinking hydrogel fi-ber:preparation and pH-sensitive propertiesin electrolyte solu-tion. Fei J Q,Gu L X. European Polymer Journal . 2002Jianqi F, Lixia G. PVA/PAA thermo-crosslinking hydrogel fiber: preparation and pH-sensitive properties in electrolyte solution. Eur Polym J...
theswelling0fthehydrogeifibersdecreasedandthejumppointpHvaluesmovedlowardhighpHvalues.Thefiber’scontractionspeedjnacidsolutionismuchfasterlhanIheswellingspeedofthefibersinbasicsolutionThefiberexhibitedagoodreversibleOscillatorySwelling/ContractingpH-responsivebehaviorKeywords:thermo-crosslinking.PVNPAAhydrogelfibecpH...
.Thehydrogelcomposedof50/50(mol/mol)PAA/PVAshowsgoodinterpenetratingstructures.ThephasedomainofPAAandPVAissmall,andtheinter-phasebetweenPAAandPVAiswide.TheincreaseofcrosslinkingagentcontentishelpfultoincreasethecompatibilityanddecreasethephasedomainattheconcentrationsmallerthanO.gmol%ofthecrosslinkingagent.The...
Poly(vinyl alcohol)(PVA)/poly(acrylic acid)(PAA) and PVA/sulfosuccinic acid (SSA) membrane performances have been studied for the pervaporation separation of methyl tert -butyl ether (MTBE)/methanol (MeOH) mixtures with varying operating temperatures, amount of cross-linking agents, and feed com...
The crosslinking reactions between PVA and PAA were characterized through IR spectroscopy, differential scanning calorimetry (DSC), and tensile tests when varying the reactions conditions, that is, time, temperature, amounts of cross-linking agents, PAA. It was found that the crosslinking reaction ...
Herein, a gelatin-based dual-network (DN) hydrogel sensor with multiple dynamic crosslinking was successfully fabricated, in which the dynamic Schiff base bonds between gelatin and an aldehyde-containing supramolecular crosslinker (PCD-Fc-CHO) formed by the host-guest complexing of β-cyclodextrin (...
(DSC) and scanning electron microscopy (SEM).The results showed that the properties were optimal when the crosslinking time was 3 days and the crosslinking temperature was 50℃ .The glass transition temperature T8 was -54.50℃,and PVA hydrogel also contained free water,bound water and non-...
智能性PVA_CS复合水凝胶微球的制备及其性能研究 西南交通大学 硕士学位论文 智能性PVA/CS复合水凝胶微球的制备及其性能研究 姓名:杨银 申请学位级别:硕士 专业:生物化学与分子生物学 指导教师:张志斌 20100401
The creep deformation of the hydrogel increases first and then decreases with the increasing of PAA, which is due to the crosslinking reaction between PAA molecules and PVA molecules. Hence, the crosslinking points and the creep property of the hydrogel increase with PAA. HA has the least ...
Effect of post crosslinking on thermo-sensitive properties of PNIPA/PVA fibers 后交联对PNIPA/PVA纤维温敏性能的影响 15. High Performance Fiber--Study on Structure Control and Drawing Mechanics of PVA Fiber; 高性能纤维——PVA纤维的结构控制与拉伸机理研究 16. The characteristics and physiological fu...