Impact of Polymer Side Chain Modification on OPV Morphology and Performance

A new type of able liquid crystalline polymer with a coumarin-containing mesogenic side group that could be photo-crosslinked was synthesized in this paper. The structure of the intermediates, monomers and polymers were characterized with FTIR and 1HNMR measurement. DSC, TG, and hot stage polarized optical microscopy were employed to study the phase transition temperature, mesophase texture, and thermal stability of the liquid crystalline polymers. The results indicated that both the monomer and polymer exhibited liquid-crystalline features over a wide temperature range.

Download Full-text

Preparation and Performance of Phase Change Materials of PEGA-g-CEA

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.723.656 ◽

2015 ◽

Vol 723 ◽

pp. 656-659

Author(s):

Jing Guo ◽

Chun Fang Yu ◽

Si Yang Mu ◽

Hong Zhang ◽

Yu Mei Gong

Keyword(s):

Polyethylene Glycol ◽

Phase Change ◽

Phase Change Materials ◽

Graft Copolymerization ◽

Solid Phase ◽

Side Chain ◽

Composition And Structure ◽

Infrared Spectrometer ◽

And Performance ◽

Chain Type

Polyethylene glycol acrylate-grfat-Cellulose-acrylate (PEGA-g-CEA) has been synthesized as side-chain-type solid-solid phase change materials for thermal energy storange through graft copolymerization. The composition and structure of the grafts and cellulose, phase transition properties and morphology of grafts were investigated by Fourier transform infrared spectrometer (FTIR), differential scaanning calorimentry (DSC) and optical microscopy. The results show that the polyethylene glycol (PEG) successfully grafted onto the cellulose macromolecule, and the solid-solid phase change materials with a certain phase transformation ability were obtained through this experiment.

Download Full-text

Relationship between Structure and Performance of Polycarboxylate Superplasticizer

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.509.57 ◽

2012 ◽

Vol 509 ◽

pp. 57-64

Author(s):

Zi Ming Wang ◽

Zi Chen Lu ◽

Fang Lu ◽

Hui Qun Li

Keyword(s):

Chain Length ◽

Density Functional ◽

Functional Group ◽

Degree Of Polymerization ◽

Side Chain ◽

Side Chain Length ◽

Existing Problems ◽

Polycarboxylate Superplasticizer ◽

And Performance ◽

The Relationship

The structure of the polycarboxylate superplasticizer (PCE) and the relationship between the structure and the performance of PCE were summarized and analyzed. Based on these results achieved so far, the consensus and the unified opinions were presented while the ambiguous and contradictory points were compared and discussed. Furthermore, the different effect on performance caused by different structure such as side chain length, degree of polymerization, side chain density, functional group were discussed systematically. Finally the existing problems and the measures to be taken in the future were proposed

Download Full-text

Synthesis and performance of a novel polycarboxylate superplasticizer through grafting the β‐cyclodextrin on the side chain by click reaction

Journal of Applied Polymer Science ◽

10.1002/app.51524 ◽

2021 ◽

pp. 51524

Author(s):

Bin Li ◽

Ruijun Gao ◽

Ling Wang

Keyword(s):

Click Reaction ◽

Side Chain ◽

Polycarboxylate Superplasticizer ◽

And Performance

Download Full-text

Engineering Candida tenuis Xylose Reductase for Improved Utilization of NADH: Antagonistic Effects of Multiple Side Chain Replacements and Performance of Site-Directed Mutants under Simulated In Vivo Conditions

Applied and Environmental Microbiology ◽

10.1128/aem.71.10.6390-6393.2005 ◽

2005 ◽

Vol 71 (10) ◽

pp. 6390-6393 ◽

Cited By ~ 29

Author(s):

Barbara Petschacher ◽

Bernd Nidetzky

Keyword(s):

Xylose Reductase ◽

Binding Pocket ◽

Kinetic Mechanism ◽

Side Chain ◽

Multiple Site ◽

Wild Type ◽

Structural Effects ◽

Phosphate Binding ◽

And Performance

ABSTRACT Six single- and multiple-site variants of Candida tenuis xylose reductase that were engineered to have side chain replacements in the coenzyme 2′-phosphate binding pocket were tested for NADPH versus NADH selectivity (R sel) in the presence of physiological reactant concentrations. The experimental R sel values agreed well with predictions from a kinetic mechanism describing mixed alternative coenzyme utilization. The Lys-274→Arg and Arg-280→His substitutions, which individually improved wild-type R sel 50- and 20-fold, respectively, had opposing structural effects when they were combined in a double mutant.

Download Full-text

Study on the preparation and performance comparison of side-chain hydroxyl-terminated polybutadiene derivatives with narrowly molecular weight distribution used for polyurethane

Polymer Testing ◽

10.1016/j.polymertesting.2021.107389 ◽

2021 ◽

pp. 107389

Author(s):

Lingxiao Ma ◽

Xiuzhong Zhu ◽

Wanbin Zhang ◽

Haitao Zhang ◽

Jianyong Wang ◽

...

Keyword(s):

Molecular Weight ◽

Molecular Weight Distribution ◽

Weight Distribution ◽

Performance Comparison ◽

Side Chain ◽

And Performance

Download Full-text

Diverse structures of metal–organic frameworks via a side chain adjustment: interpenetration and gas adsorption

Dalton Transactions ◽

10.1039/c6dt03086f ◽

2016 ◽

Vol 45 (41) ◽

pp. 16205-16210 ◽

Cited By ~ 5

Author(s):

Kang Shen ◽

Ling Qin ◽

He-Gen Zheng

Keyword(s):

Coordination Polymers ◽

Gas Adsorption ◽

Metal Organic Frameworks ◽

Side Chain ◽

Side Chains ◽

Metal Organic ◽

And Performance

Three new coordination polymers have been synthesized based on linear ligands with different side chains. By the adjustment of side chains, the structure and performance were regulated.

Download Full-text