Cleavable Surfactants: A Comparison between Ester, Amide, and Carbonate as the Weak Bond

2019 ◽  
Vol 22 (5) ◽  
pp. 1139-1145 ◽  
Author(s):  
Maria Stjerndahl ◽  
Dan Lundberg ◽  
Vinay Chauhan ◽  
Romain Bordes ◽  
Krister Holmberg
Keyword(s):  
Weak Bond ◽  
Cleavable Surfactants

Bond, weak bond

Nature ◽  
1999 ◽  
Author(s):  
Philip Ball
Keyword(s):  
Weak Bond

Polymorphism of 4-bromobenzophenone

2007 ◽  
Vol 63 (2) ◽  
pp. 296-302 ◽  
Author(s):  
Mikhail A. Strzhemechny ◽  
Vyacheslav N. Baumer ◽  
Anatoli A. Avdeenko ◽  
Oleg S. Pyshkin ◽  
Roman V. Romashkin ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Strong Temperature Dependence ◽  
Weak Bond ◽  
X Ray ◽  
Monoclinic Form ◽  
Additional Stabilization ◽  
Growth Method ◽  
Stockbarger Method ◽  
Unknown Structure ◽  
Ray Density

A combination of single-crystal and powder X-ray diffractometry was used to study the structure of two polymorphs of 4-bromobenzophenone over the temperature range from 100 to 300 K. One of the polymorphs of the title compound was known previously and its structure has been determined at room temperature [Ebbinghaus et al. (1997). Z. Kristallogr. 212, 339–340]. Two crystal growth methods were employed, one of which (a modification of the Bridgman–Stockbarger technique) resulted in single crystals of a previously unknown structure. The basic physical properties of the stable polymorph are: growth method, from 2-propanol solutions or gradient sublimation; space group, monoclinic P21/c; melting point, T m = 355.2 K; X-ray density (at 100 K), Dx = 1.646 g cm−3. The same properties of the metastable polymorph (triclinic P\overline 1 ) are: growth method, modified Bridgman–Stockbarger method; X-ray density (at 100 K), Dx = 1.645 g cm−3; T m = 354 K. Thermograms suggest that the melting of the metastable form is accompanied by at least a partial crystallization presumably into the monoclinic form; the transformation is therefore monotropic. Analysis of short distances in both polymorphs shows that numerous weak hydrogen bonds of the C—H...π type ensure additional stabilization within the respective planes normal to the longest dimension of the molecules. The strong temperature dependence of the lattice constants and of the weak bond distances in the monoclinic form suggest that the weak bond interactions might be responsible for both the large thermal expansion within plane bc and the considerable thermal expansion anisotropy.

Preparation of new acetal type cleavable surfactants from epichlorohydrin

1990 ◽  
Vol 55 (14) ◽  
pp. 4461-4464 ◽  
Author(s):  
Daisuke Ono ◽  
Araki Masuyama ◽  
Mitsuo Okahara
Keyword(s):  
Cleavable Surfactants

scholarly journals Development of the symmetrical laser shock test for weak bond inspection

2018 ◽  
Author(s):  
M. Sagnard ◽  
L. Berthe ◽  
R. Ecault ◽  
F. Touchard ◽  
M. Boustie ◽  
...  
Keyword(s):  
Laser Shock ◽  
Shock Test ◽  
Weak Bond

Spaltbare Tenside vom Acetal-Type/ Cleavable Surfactants of the Acetal Type

1992 ◽  
Vol 29 (6) ◽  
pp. 412-417
Author(s):  
D. Ono ◽  
A. Masuyama ◽  
T. Tanaka ◽  
M. Okahara
Keyword(s):  
Cleavable Surfactants

scholarly journals Synthesis and Properties of Soap Types of Cleavable Surfactants Bearing a 1, 3-Dioxolane Ring Derived from Long-chain Epoxides and Ethyl Levulinate

1993 ◽  
Vol 42 (12) ◽  
pp. 965-971 ◽  
Author(s):  
Daisuke ONO ◽  
Shingo YAMAMURA ◽  
Masaki NAKAMURA ◽  
Tokuji TAKEDA ◽  
Takeshi TANAKA ◽  
...  
Keyword(s):  
Cleavable Surfactants ◽  
Ethyl Levulinate ◽  
Long Chain

scholarly journals Weak bond strength between successive layers in extrusion-based additive manufacturing: measurement and physical origin

2019 ◽  
Vol 123 ◽  
pp. 105787 ◽  
Author(s):  
Emmanuel Keita ◽  
Hela Bessaies-Bey ◽  
Wenqiang Zuo ◽  
Patrick Belin ◽  
Nicolas Roussel
Keyword(s):  
Additive Manufacturing ◽  
Bond Strength ◽  
Physical Origin ◽  
Weak Bond

Development of Cleavable Surfactants

2010 ◽  
Vol 47 (1) ◽  
pp. 7-12 ◽  
Author(s):  
D. Shukla ◽  
V. K. Tyagi
Keyword(s):  
Cleavable Surfactants
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