| |
Solvent quality affects chain conformational order at the polymer surface revealed by sum frequency generation vibrational spectroscopy
The surface sum frequency generation (SFG) vibrational spectroscopic spectra of PMA and PMMA films prepared from solvents with different qualities were found different. This suggests that the surface molecular structures of PMA and PMMA films were affected by the solvent quality. A simple phenomenological model was used to describe the chain conformational order at the polymer surface by co...
http://www.polymer.cn//ss/cenglxl/publicationsshow_7471.html |
| |
Illustrating consistency of different experimental approaches to probe the buried polymer/metal interface using sum frequency generation vibrational spectroscopy
In this paper, we demonstrate our ability to directly probe the molecular structures of the buried polymer/metal interface using sum frequency generation (SFG) vibrational spectroscopy. Spectroscopic data from different experimental approaches were compared and analyzed to deduce the molecular ordering information at a buried polymer/metal interface, i.e. the poly(n-butyl methylacrylate) (P...
http://www.polymer.cn//ss/cenglxl/publicationsshow_7468.html |
| |
[JPS Part A] Poly(vinylphosphonate)s functionalized polymer microspheres via rare earth metal-mediated group transfer polymerization
We demonstrate a facile, yet efficient method for the
functionalization of crosslinked polystyrene (PS) microspheres
with biocompatible poly(vinylphosphonate)s via the combination
of a UV grafting polymerization and a surface-initiated group
transfer polymerization. Self-initiated photografting and photopolymerization
of ethylene glycol dimethacrylate results in direct
photografting of poly(ethyle...
http://www.polymer.cn//ss/zhang_ning/publicationsshow_7440.html |
| |
138. Speeding of Spherulitic Growth Rate at the Late Stage of Isothermal Crystallization Due to Interfacial Diffusion for Double-Layer Semicrystalline Polymer Films
In this study a unique phenomenon has been found for isothermal
crystallization of double-layer semicrystalline polymer films. It is
surprisingly found that there exists a speeding of poly(l-lactic acid) (PLA) spherulitic growth rate for poly(ethylene oxide)/poly(l-lactic
acid) (PEO/PLA) double-layer films at the late stage of isothermal
crystallization, which does not exist for PLA/PEO blend ...
http://www.polymer.cn//ss/zhigangwang/publicationsshow_7434.html |
| |
Folic acid-Conjugated pH/temperature/redox multi-stimuli responsive biodegradable polymer microspheres for delivery of anti-cancer drugs
The folic
acid (FA)-conjugated pH/temperature/redox multi-stimuli responsive poly(methacrylic
acid-co-N,N-bis(acryloyl)cystamine/poly(N-isopropylacrylamide -co-glycidyl methacrylate-co-N,N-bis(acryloyl)cystamine) microspheres
were prepared by a
two-stage distillation-precipitation polymerization
with subsequent surface modification with FA. The microspheres were
characterized by transmission ...
http://www.polymer.cn//ss/yangxinlin/publicationsshow_7382.html |
| |
[Macromolecules] From Polymer Sequence Control to Protein Recognition: Synthesis, Self-Assembly and Lectin Binding
A novel, highly efficient methodology to synthesize gradient
glycopolymers has been successfully developed involving concurrent
enzymatic monomer transformation and reversible addition–fragmentation
chain transfer (RAFT) polymerization. By synchronizing enzymatic monomer
transformation with polymerization, a continuous supply of the second
monomer (glycomonomer) is achieved during the...
http://www.polymer.cn//ss/gchen/publicationsshow_7357.html |
| |
[Chem. Comm.] Visible light induced fast synthesis of protein-polymer conjugates: controllable polymerization and protein activity
Herein visible
light is used to induce RAFT polymerization from protein for preparing
protein-polymer conjugates at ambient temperature. Polymerization is
fast and can be conveniently controlled with irradiation time. By
site-specific polymerization of NIPAm to protein, the protein activity
is maintained and in certain cases it presents an efficient
on-off-switchable property.
http://www.polymer.cn//ss/gchen/publicationsshow_7339.html |
| |
Tough Biomimetic Hydrogels with High Fatigue Resistance Based on Self-Assembled Conjugated Polymer Belt Mesh Interlaced with a Polyelectrolyte Network
Supertough biomimetic hydrogels have been fabricated through in
situ synthesis and guided assembling of positively charged conjugated polymer belts
by using a parent poly(2-acrylamido-2-methylpropanesulfonic acid)/poly-
(acrylamide) double network (PAMPS/PAAm DN) gel template. The interpenetrating
structures of the poly(3,4-ethylenedioxythiophene) (PEDOT) belt
mesh and PAMPS/PAAm host network have...
http://www.polymer.cn//ss/fujun/publicationsshow_7263.html |
| |
[RSC Advances] Polymer brushes functionalized Janus graphene oxide/chitosan hybrid membranes
A robust and simple method is reported to prepare polymer brushes functionalized Janus graphene oxide (GO)/chitosan hybrid membranes via the combination of interface self-assembly of GO and chitosan, with subsequent self-initiated photografting and photopolymerization (SIPGP) from both sides of GO/chitosan composite membranes.
http://www.polymer.cn//ss/chentaogroup/publicationsshow_7175.html |
| |
[Chem. Eur. J.] Chemoselective Phototransformation of C-H Bond on Polymer Surface via a Novel Photoinduced Cerium Recycling Redox
It is
generally accepted that Ce4+ is unable to directly oxidize inert
alkyl C-H bond without the assistance of adjacent polar groups. Herein we
demonstrated in our newly developed confined photochemical reaction system,
this recognition might be challenged. As we found, when a thin layer of CeCl3/HCl
aqueous solution was applied onto polymeric substrate, and under UV
irradiation, Ce3+ was firstly...
http://www.polymer.cn//ss/yangpeng/publicationsshow_7165.html |
| |