Hydrogen Bonding, Mechanical and Physical Property, and Surface Morphology of Waterborne Polyurethane / Clay Nanocomposite

2004 ◽  
pp. 731-735 ◽  
Author(s):  
Chen-Chi M. Ma ◽  
Hsu-Chiang Kuan ◽  
Wen-Ping Chuang ◽  
Hsun-Yu Su
Keyword(s):  
Hydrogen Bonding ◽  
Surface Morphology ◽  
Physical Property ◽  
Waterborne Polyurethane

Effect of Electrolyte Compositions on the Physical Property and Surface Morphology of Copper Foil

2010 ◽  
Vol 48 (10) ◽  
pp. 951-956 ◽  
Author(s):  
Tae-Gyu Woo ◽  
Il-Song Park ◽  
Woo-Yong Jeon ◽  
Eun-Kwang Park ◽  
Kwang-Hee Jung ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Copper Foil ◽  
Physical Property

scholarly journals Deeper Insights into Conformational Analysis of cis-Butene and 1-Alkenes as Monomers and Dimers: QTAIM, NCI, and DFT Approach

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Caio L. Firme
Keyword(s):  
Hydrogen Bonding ◽  
Conformational Analysis ◽  
Intermolecular Interaction ◽  
Boiling Point ◽  
Experimental Studies ◽  
Physical Property ◽  
Repulsive Interaction ◽  
Methyl Groups ◽  
Stable Conformer ◽  
Linear Relationships

A few theoretical and experimental studies have been done so far about the properties and the conformational analysis of alkenes as monomers and dimers. Deeper insights into the conformational analysis of monomers and dimers of alkenes and the relation with boiling point are done in this work. In low-lying cis-butene, there is no repulsive interaction between methyl groups but there is an attractive hydrogen-hydrogen bonding. In monomers of 1-alkenes, the most stable conformer has bent-inward geometry which favors the π bond interaction with methyl/methylene hydrogen/carbon atoms. Conversely, each alkene’s molecule in the corresponding most stable alkene’s dimer has a straight, zig-zag geometry. Two straight, zig-zag alkene’s molecules in the corresponding most stable dimer have only one type of intermolecular interaction (hydrogen-hydrogen bonding). As a consequence, very good linear relationships between a physical property (such as boiling point) and theoretical parameters are obtained.

Effect of Physical Property and Surface Morphology of Copper Foil at Electrodeposition Parameter

2014 ◽  
Vol 52 (6) ◽  
pp. 467-473 ◽  
Author(s):  
Tae Gyu Woo ◽  
Il Song Park ◽  
Man Hyung Lee ◽  
Kyeong Won Seol
Keyword(s):  
Surface Morphology ◽  
Copper Foil ◽  
Physical Property

Effect of Hydrogen Bonding Interaction on the Properties of Caprolactam-Modified Casein/Waterborne Polyurenthane Composite

2010 ◽  
Vol 160-162 ◽  
pp. 1090-1094 ◽  
Author(s):  
Jian Zhong Ma ◽  
Qun Na Xu ◽  
Dang Ge Gao ◽  
Jing Yi Zhang ◽  
Yan Xiao Ma
Keyword(s):  
Hydrogen Bonding ◽  
Water Resistance ◽  
Waterborne Polyurethane ◽  
Alkali Resistance ◽  
Hydrogen Bonding Interaction ◽  
Polyurethane Composite ◽  
Bonding Interaction ◽  
Ft Ir ◽  
Average Size ◽  
Electrolyte Resistance

Caprolactam modified casein(CA-CPL) was prepared by using casein and caprolactam firstly. Caprolactam modified casein/waterborne polyurethane composite (CA-CPL/WPU) was prepared from CA-CPL and WPU. Effect of compounding conditions, such as the WPU dosage, compounding temperature and compounding time on CA-CPL/WPU performance were investigated. The results indicated that: CA-CPL/WPU achieved superior comprehensive performance when the WPU dosage was 50%, the compounding temperature and the compounding time was 80°Cand 2 h respectively. Viscosity of CA-CPL/WPU decreased firstly with the increasing amount of WPU When the WPU dosage was lower than 30%, and then increased gradually when the WPU dosage was higher than 30%. The more the dosage of WPU used in the reaction, the less dilution stability CA-CPL/WPU had. Acidic resistance, alkali resistance and electrolyte resistance of CA-CPL/WPU seemed to be invariable after WPU was introduced , but water resistance and softness of the film were improved. FT-IR and DLS results indicated that via the compounding process, certain hydrogen bonding interaction in CA-CPL/WPU took place and the obtained CA-CPL/WPU had a small Z-average size and polydispersity.

High stretchable, bionic self-healing waterborne polyurethane elastic film enabled by multiple hydrogen bonding for flexible strain sensors

2021 ◽  
Author(s):  
Ending Zhang ◽  
Xiaohong Liu ◽  
Yingchun Liu ◽  
Jun Shi ◽  
Xiaobin Li ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Waterborne Polyurethane ◽  
Strain Sensors ◽  
Self Healing ◽  
Flexible Sensors ◽  
Electronic Skin ◽  
Elastic Film ◽  
Multiple Hydrogen Bonding

Flexible elastomer material with high stretchability and self-healing performance is the preferred substrates for preparing multi-function flexible sensors and bionic electronic skin. However, it is still a great challenge to...

An Established Epithelial Cell Line (NPC/HK1) from a Nasopharyngeal Carcinoma - II. A Sem Study

1982 ◽  
Vol 40 ◽  
pp. 224-225
Author(s):  
Li C.L. ◽  
Chew E.C. ◽  
Huang D.P. ◽  
Ho H.C. ◽  
Mak L.S. ◽  
...  
Keyword(s):  
Nasopharyngeal Carcinoma ◽  
Epithelial Cell ◽  
Surface Morphology ◽  
Cell Line ◽  
Epithelial Cell Line ◽  
Present Communication ◽  
Cells In Culture ◽  
Sem Study ◽  
Well Differentiated

An epithelial cell line, NPC/HK1, has recently been successfully established from a nasopharyngeal carcinoma of the moderately to well differentiated squamous type. The present communication reports on the surface morphology of the NPC/HK1 cells in culture.

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