Molecular Structure of an Alkyl-Side-Chain Polymer−Water Interface:  Origins of Contact Angle Hysteresis

Langmuir ◽  
2004 ◽  
Vol 20 (20) ◽  
pp. 8625-8633 ◽  
Author(s):  
Hasnain Rangwalla ◽  
Alexander D. Schwab ◽  
Betül Yurdumakan ◽  
Dalia G. Yablon ◽  
Mohsen S. Yeganeh ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Contact Angle ◽  
Contact Angle Hysteresis ◽  
Side Chain ◽  
Water Interface ◽  
Alkyl Side Chain ◽  
Chain Polymer

scholarly journals Studies in the Biochemistry of Micro-organisms. Part XV.—The Molecular Structure of Citrinin

1931 ◽  
Vol 220 (468-473) ◽  
pp. 297-300 ◽  
Keyword(s):  
Molecular Structure ◽  
Potassium Hydroxide ◽  
Side Chain ◽  
Hydroxyl Groups ◽  
Alkyl Side Chain ◽  
Present Communication ◽  
Colour Reaction ◽  
Dihydric Phenol ◽  
Resorcinol Derivative ◽  
Micro Organisms

The present communication is, in effect, a discussion of the results obtained in the investigation of citrinin, and described in the preceding memoir (Part XIV ); these results, combined with some few further observations, appear to afford a key to the constitution of the substance. In considering this matter, it is convenient to start with the dihydric phenol, C 9 H 12 O 2 (I) (p. 290), which was obtained by fusing either of the isomeric products A or B (p. 283) with potassium hydroxide. This dihydric phenol has the composition of a dihydroxypropylbenzene, but the relative position of the hydroxyl groups and the arrangement of the alkyl side-chain or chains is unknown. The colour reaction with ferric chloride is, however, in agreement with the view that the substance is a resorcinol derivative, rather less well in harmony with the catechol hypothesis, and is hardly reconcilable with the assumption of a quinol nucleus.

Structure Influenced Physicochemical Properties of Pyridine Perrhenate Ionic Liquids

2011 ◽  
Vol 239-242 ◽  
pp. 1911-1914
Author(s):  
Xue Jun Gu ◽  
Da Wei Fang ◽  
Shuang Yue ◽  
Yu Liu ◽  
Shu Liang Zang
Keyword(s):  
Molecular Structure ◽  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Side Chain ◽  
Pyridinium Salts ◽  
Alkyl Side Chain

A novel series of Pyridinium salts with rhenium group attached to the alkyl side chain, viz. [CnPy][ ReO4] (where CnPy is the N-alkyl- pyridine cation and Cn=(CH2)n-1CH3,n= 2-6), have been synthesized and characterized. The physicolchemical properties of the ionic liquids have been determined and estimated. The influence on physicolchemical properties by molecular structure was discussed.

Effect of the interfacial structures of alkyl-side-chain polymer films on the peel force

2018 ◽  
Vol 82 ◽  
pp. 166-172
Author(s):  
Fumiya Mori ◽  
Shin-ichiro Kabashima ◽  
Tetsuro Kawakami ◽  
Takaichi Yamamoto ◽  
Takayuki Miyamae ◽  
...  
Keyword(s):  
Polymer Films ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Chain Polymer ◽  
Interfacial Structures ◽  
Peel Force

Temperature Stability of the Interfacial Structure between a Sulfonated Crystalline Alkyl Side-Chain Polymer and a Soft Adhesive

Langmuir ◽  
2008 ◽  
Vol 24 (18) ◽  
pp. 10169-10173 ◽  
Author(s):  
Haris Retsos ◽  
Daewon Lee ◽  
Min-Young Lim ◽  
Jong-Chan Lee ◽  
Kookheon Char ◽  
...  
Keyword(s):  
Temperature Stability ◽  
Interfacial Structure ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Chain Polymer

scholarly journals Vertical Orientation of Liquid Crystal on Comb-Like 4-(trans-4-alkylcyclohexyl)phenoxymethyl-substituted Polystyrene Containing Liquid Crystal Precursor

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1404
Author(s):  
Kyutae Seo ◽  
Hyo Kang
Keyword(s):  
Molecular Structure ◽  
Contact Angle ◽  
Liquid Crystal ◽  
Water Contact Angle ◽  
Polymer Films ◽  
Molar Fraction ◽  
Side Chain ◽  
Polymer Modification ◽  
Vertical Orientation ◽  
Water Contact

We synthesized a series of polystyrene derivatives modified with precursors of liquid crystal (LC) molecules, including 4-(trans-4-ethylcyclohexyl)phenol (homopolymer PECH and copolymer PECH#; # = 5, 10, 15, 20, 40, 60, and 80, where # indicates the molar fraction of 4-(trans-4-ethylcyclohexyl)phenoxymethyl in the side chain), 4-(trans-4-propylcyclohexyl)phenol (PPCH), 4-(trans-4-butylcyclohexyl)phenol (PBCH), and 4-(trans-4-amylcyclohexyl)phenol (PAmCH) via polymer modification reactions in order to investigate the orientation of LC molecules on polymer films exhibiting part of the LC molecular structure. A stable and uniform vertical orientation of LC molecules was observed in LC cells fabricated with PECH#, having 15 mol% or more of 4-(trans-4-ethylcyclohexyl)phenoxymethyl side groups. In addition, the vertical orientation of LC molecules was observed in LC cells fabricated with homopolymers of PECH, PPCH, PBCH, and PAmCH. The water contact angle on the polymer films could be associated with the vertical orientation of the LC molecules in the LC cells fabricated with polymer films. For example, a vertical LC orientation was observed when the water contact angle of the polymer films was higher than ~81°. Good orientation stability was observed at 200 °C and 15 mW/cm2 of UV irradiation for LC cells fabricated with PECH films.

A NEW APPROACH TO INVESTIGATE CONTACT ANGLE HYSTERESIS

2018 ◽  
Author(s):  
Qiao Liu ◽  
Abbasali Abouei Mehrizi ◽  
Hao Wang
Keyword(s):  
Contact Angle ◽  
Contact Angle Hysteresis ◽  
New Approach
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