Influence of molecular weight on polymorphs and temperature-induced structure evolution of regioregular poly(3-dodecylthiophene)

2014 ◽  
Vol 5 (6) ◽  
pp. 1938-1944 ◽  
Author(s):  
Yan Guo ◽  
Lei Wang ◽  
Yuanyuan Han ◽  
Yanhou Geng ◽  
Zhaohui Su
Keyword(s):  
Molecular Weight ◽  
Structure Evolution ◽  
Regioregular Poly ◽  
Induced Structure

Structure Evolution of Electrorheological Fluids under Flow Conditions

1999 ◽  
Vol 13 (14n16) ◽  
pp. 1806-1813 ◽  
Author(s):  
X. Tang ◽  
W. H. Li ◽  
X. J. Wang ◽  
P. Q. Zhang
Keyword(s):  
Layer Structure ◽  
Transparent Electrode ◽  
Electrorheological Fluids ◽  
Structure Evolution ◽  
Flow State ◽  
Flow Conditions ◽  
Transition Diagram ◽  
Conducting Film ◽  
Er Fluids ◽  
Induced Structure

Transparent electrode with a conducting film on a glass surface provides us a useful tool to observe the fired-induced structure formation in ER fluids directly under both quiescent and dynamic conditions. In this paper the flow and field-induced structure evolution in ER fluids will be studied in three flow conditions, i.e., (a) ER fluids flowing through a slit channel between two fixed parallel transparent electrodes, which construct a model ER valve, (b) ER fluids being sheared between two concentric transparent electrode tubes, which correspond to a conventional rotary rheometer and (c) ER fluids being sheared between two parallel plate disks, which correspond to an ER clutch. Shear-induced layer structure was observed even when the shear rate reaches 600 s -1. A tentative phase transition diagram between the layer structure and the homogeneous flow state will be given.

scholarly journals Fluorous ‘ponytails’ lead to strong gelators showing thermally induced structure evolution

Soft Matter ◽  
2015 ◽  
Vol 11 (43) ◽  
pp. 8471-8478 ◽  
Author(s):  
Harshita Kumari ◽  
Sarah E. Armitage ◽  
Steven R. Kline ◽  
Krishna K. Damodaran ◽  
Stuart R. Kennedy ◽  
...  
Keyword(s):  
Structure Evolution ◽  
Thermally Induced ◽  
Potential Applications ◽  
Transparent Gels ◽  
Induced Structure

Appending perfluoroalkyl substituents to bis(urea) gelators results in significantly decreased inter-chain interactions with markedly thinner fibres and hence more cross-linked and more transparent gels with potential applications in the crystallisation of fluorinated pharmaceuticals.

scholarly journals Determination of absolute molecular weight of regioregular poly(3-hexylthiophene) by1H-NMR analysis

2016 ◽  
Vol 55 (1) ◽  
pp. 79-82 ◽  
Author(s):  
Dushanthi S. Dissanayake ◽  
Elena Sheina ◽  
Michael C. Biewer ◽  
Richard D. McCullough ◽  
Mihaela C. Stefan
Keyword(s):  
Molecular Weight ◽  
Nmr Analysis ◽  
Regioregular Poly

Flow-induced structure and rheological properties of multiwall carbon nanotube/polydimethylsiloxane composites

RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62759-62768 ◽  
Author(s):  
Ran Niu ◽  
Jiang Gong ◽  
Donghua Xu ◽  
Tao Tang ◽  
Zhao-Yan Sun
Keyword(s):  
Molecular Weight ◽  
Carbon Nanotube ◽  
Rheological Properties ◽  
Normal Stress ◽  
Polymer Composites ◽  
Polymer Matrix ◽  
Multiwall Carbon Nanotube ◽  
Normal Stress Differences ◽  
Induced Structure ◽  
Multiwall Carbon

The structure and normal stress differences of MWNT/polymer composites are influenced by the molecular weight of the polymer matrix and the confinement effect.

Deformation-induced structure evolution of oriented β-polypropylene during uniaxial stretching

Polymer ◽  
2013 ◽  
Vol 54 (3) ◽  
pp. 1259-1268 ◽  
Author(s):  
Rui-Ying Bao ◽  
Zhi-Tian Ding ◽  
Zheng-Ying Liu ◽  
Wei Yang ◽  
Bang-Hu Xie ◽  
...  
Keyword(s):  
Structure Evolution ◽  
Uniaxial Stretching ◽  
Induced Structure

Thermally-induced structure evolution in ternary Ti1−xYxB2+Δ films

2019 ◽  
Vol 164 ◽  
pp. 91-95
Author(s):  
M. Mikula ◽  
B. Grančič ◽  
P. Švec ◽  
T. Roch ◽  
M. Truchlý ◽  
...  
Keyword(s):  
Structure Evolution ◽  
Thermally Induced ◽  
Induced Structure

Structural origins, tunable photoluminescence governed by impurities and white-light irradiation in transparent Pr3+:BaTiO3 glass-ceramics

CrystEngComm ◽  
2019 ◽  
Vol 21 (23) ◽  
pp. 3613-3618 ◽  
Author(s):  
Wenqing Xie ◽  
Panpan Li ◽  
Qijing Zhu ◽  
Yun Wang ◽  
Yunjie Zhang ◽  
...  
Keyword(s):  
Active Control ◽  
White Light ◽  
Fluorescence Emission ◽  
Glass Ceramics ◽  
Light Irradiation ◽  
Structure Evolution ◽  
Induced Structure

Study for impurity- and irradiation-induced structure evolution in mono Pr3+:BaTiO3 glass ceramics notably promotes the active control of fluorescence emission.

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