| |
Modification of mesoporous silica with phosphotungstic acid and its effects on the combustion and thermal behavior of polylactic acid composites
Highly ordered mesoporous silica (SiO2) modified with phosphotungstic acid (PWA), was successfully prepared by vacuum impregnation. The chemical structure of as-designed PWA-mesoporous silica (PWA-SiO2) was characterized by transmission electron microscopy, scanning electron microscopy, Fourier transform infrared spectra and small-angle X-ray scattering. PWA-SiO2, in association with intumescent...
http://www.polymer.cn//ss/zhangshengfrml/publicationsshow_13577.html |
| |
NiCo-Embedded in Hierarchically Structured N-Doped Carbon Nanoplates for the Efficient Electrochemical Determination of Ascorbic Acid, Dopamine, and Uric Acid
The development of a highly stable and efficient catalyst for sluggish electrooxidation in the electro-determination for ascorbic acid (AA), dopamine (DA) and uric acid (UA) is extremely important for the long-term operation and commercialization of a biosensor device, but it remains a challenge. Herein, we demonstrated an interesting structure of NiCo alloy nanocrystals embedded in hierarchical...
http://www.polymer.cn//ss/jiananzhang/publicationsshow_12921.html |
| |
Proximate, amino acid and fatty acid composition in the leaves of Cyclocarya paliurus (Batal.) Iljinskaja
-Xie JH#, Shen MY#, Nie SP, Li C, Gong DM, Xie MY
http://www.polymer.cn//ss/jhxiencu/publicationsshow_10049.html |
| |
Diphenolic acid based biphosphate on the properties of polylactic acid: synthesis, fire behavior and flame retardant mechanism
In an effort to impart fire protection properties to polylactic acid
(PLA) utilizing renewable
resources, diphenolic acid, a plant derived compound, was used to synthesize a
phosphate (hereinafter
shortened as FR) that contains two types of phosphorus. The chemical structure
of FR was confirmed by 1H NMR and 31P NMR, respectively. UL-94 V0 rating and LOI
value of 27.4 for
PLA were achieved at the ...
http://www.polymer.cn//ss/zpfang/publicationsshow_9895.html |
| |
Development of amino acid and amino acid-complex based solid sorbents for CO2 capture
For the first time, amino acid (AA) and AA-complex based solid sorbents for CO2 removal were investigated by immobilizing AAs and AA-complex es into porous polymethylmeth acrylate (PMMA) microspheres. Deposition of pure AAs into porous PMMA supports led to limited CO2 adsorption in sorbents, because large AA particles or crystals were formed during deposition of pure AAs into PMMA microspheres and...
http://www.polymer.cn//ss/bingbingjiang/publicationsshow_5737.html |
| |
Synthesis of poly(L-lactic acid) with improved thermal stability by sulfonic acid-catalyzed melt/solid polycondensation.
Melt/solid polycondensation (MP/SSP) is deemed as an alternative synthetic route besides ring-opening polymerization (ROP) in synthesizing poly(L-lactic acid) (PLLA). However, it is found that PLLA synthesized by MP/SSP has much poorer thermal stability than that by ROP due to more residual Sn(II) metallic catalyst in the former, but sulfonic acids does not show any detrimental effe...
http://www.polymer.cn//ss/wulinbo/publicationsshow_5141.html |
| |
Preparation of poly(p-styrenesulfonic acid) grafted multi-walled carbon nanotubes and their application as a solid-acid catalyst
Poly(p-styenesulfonate acid)-grafted multi-walled carbon nanotubes (PSSA-g-MWCNTs) were prepared by in situ polymerization of sodium p-styrenesulfonate in the presence of MWCNTs, followed by refluxing with concentrated hydrochloric acid. In this reaction system, sodium p-styrenesulfonate served not only as the reaction monomer but also as an amphiphilic dispersant to disperse pristine MWCNTs in wa...
http://www.polymer.cn//ss/yangdongfd/publicationsshow_3591.html |
| |
Thermal stability of aromatic polyesters prepared from diphenolic acid and its esters acid and its esters
The thermal performance of aromatic polyesters prepared from isophthaloyl chloride with diphenolic acid and its esters were studied with DSC and TG,and the decomposition mechanism of poly(DPA-IPC) were investigated using FTIR and integrated TG/FTIR analyses. As compared with ordinary aromatic polyesters,poly(DPA-IPC) has lower glass transsition temperatureand much lower thermal s...
http://www.polymer.cn//ss/wulinbo/publicationsshow_2387.html |
| |
Studies on the synthesis and thermal properties of copoly(L-lactic acid/glycolic acid) by direct melt polycondensation
A two-step direct copolymerization process of L-lactic acid (L-LA)/glycolic acid (GA) was developed. The first step was to produce an oligomer of L-LA/GA and then the oligomer was polymerized with binary catalyst tin chloride dihydrate/rho-toluenesulfonic acid. In this way, the copoly(L-LA/GA) (PLGA), without any organic solvent, was synthesized directly. The thermal properties and solubility in c...
http://www.polymer.cn//ss/yaopengzhang/publicationsshow_1732.html |
| |
Synthesis, Characterization and Drug Delivery of AmphiphilicPoly{(lactic acid)-co-[(glycolic acid)-alt-(L-glutamic acid)]}-g-Poly(ethylene glycol)
关键字：PLGG-g-mPEG, micelles, drug delivery, doxorubicin (DOX)
This paper discusses the use of a novel amphiphilic graft polymer poly{(lactic acid)-co-[(glycolic acid)-alt-(Lglutamic acid)]}-g-monomethyl poly(ethylene glycol) (PLGG-g-mPEG) as a drug carrier. PLGG was synthesized through the ring-opening polymerization of L-lactide (LLA) and (3s)-benzoxylcarbonylethyl-morpholine-2,5-dione
(BEMD) using Sn(Oct)2 as a catalyst and it was subsequently deprotected...
http://www.polymer.cn/research/sy_info14957 |
| |