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Diethanol Ammonium-borate Based Polybetaine with Tunable UCST Phase Transition
关键字：Tunable UCST Phase Transition
A betaine-type styrene monomer with the quaternary ammonium-borate anion inner-salt pair was synthesized
through the quaternization reaction and polymerized to afford the target polybetaine of poly(4-vinylbenzyl methyl-diethanol
ammonium borate) (PVMAB). The chemical structures of the monomer and polymer were well demonstrated with 1H-NMR
and 11B-NMR spectra analysis. The thermal-sensit...
http://www.polymer.cn/research/sy_info19442 |
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Conformational Identification and Phase Transition Behavior of Poly(trimethylene 2,6-naphthalate) α?Form Modification
关键字：PTN, α?Form crystal, conformation, Phase transtion
Poly(trimethylene 2,6-naphthalate) (PTN) is one of the 1,3-propanediol (PDO)-based aromatic polyesters which has potential applications for special barrier films and
packaging due to its excellent oxygen and carbon dioxide gas barrier property. In this work, we investigated the chain conformation and phase transition behavior of poly-
(trimethylene 2,6-naphthalene) (PTN) α-form crystal with synch...
http://www.polymer.cn/research/sy_info19413 |
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Study of the Kinetics of the Pancake-to-Brush Transition of Poly(N-isopropylacrylamide) Chains
关键字：pancake, brush, pnipam, qcm
The chemical grafting of thiol-terminated poly(N-isopropylacrylamide) (HS-PNIPAM) chains to a gold surface from a solution was investigated with a quartz crystal microbalance (QCM) in real time. The frequency and energy dissipation responses revealed that short HS-PNIPAM chains exhibit three-regime kinetics of the grafting. In regimes I and II, the HS-PNIPAM chains form pancake an...
http://www.polymer.cn/research/sy_info15847 |
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Kinetics of coil-to-globule transition of dansyl-labeled poly(n-isopropylacrylamide) chains in aqueous solutions
The coil-to-globule transition of thermally sensitive linear poly(N-isopropylacrylamide) (PNIPAM) labeledwith dansyl group was induced by 1.54-μm laser pulses (width ~ 10 ns). The dansyl group was used to follow thetransition kinetics because&n...
http://www.polymer.cn/research/sy_info14708 |
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Structural transition in surface layer of polymeric latex droplet during drying process at solid surface
Latex dispersions made of polymeric particles with a typical size of around 100 nm have attracted muchattention over the past decades because of their potential applications in paints, paper coatings and water-basedadhesives.1-4 They a...
http://www.polymer.cn/research/sy_info14631 |
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Thermal Processing and Glass Transition Behavior of Cellulose Plasticized by Ionic Liquids
关键字：Cellulose, Thermal process,lonic liquids, Plasticize
Cellulose,a kind of polysaccharides produced by green plants and some kinds of bacteria, has plenty of advantages, such as renewability, biocompatibility and outstanding mechanical properties[l]. Due to the influences o...
http://www.polymer.cn/research/dis_info17353 |
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Kinetics of coil-to-globule transition of dansyl-labeled poly(n-isopropylacrylamide) chains in aqueous solutions
The coil-to-globule transition of thermally sensitive linear poly(N-isopropylacrylamide) (PNIPAM) labeledwith dansyl group was induced by 1.54-μm laser pulses (width ~ 10 ns). The dansyl group was used to follow thetransition kinetics because&n...
http://www.polymer.cn/research/dis_info16967 |
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Reduced packing density causing glass transition temperature reductions in freezedried polymer and freestanding polymer film as measured by NRET
The study of the glass transition in confined geometries is an active field of research in polymers [1-3], smallmolecules [4] and simulations [5]. The understanding of how the glass transition temperature can increase ordecrease b...
http://www.polymer.cn/research/dis_info16935 |
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Structural transition in surface layer of polymeric latex droplet during drying process at solid surface
Latex dispersions made of polymeric particles with a typical size of around 100 nm have attracted muchattention over the past decades because of their potential applications in paints, paper coatings and water-basedadhesives.1-4 They a...
http://www.polymer.cn/research/dis_info16911 |
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Unique evolution of spatial and dynamic heterogeneity on the glass transition behavior of PVPh/PEO blends
The spatial and dynamic heterogeneity responsible for the glass transition behavior in polymers has attracted significant attention in the past decade.
http://www.polymer.cn/research/dis_info16781 |
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