41514-45-8Relevant academic research and scientific papers
Synthesis and characterization of p-benzophenoneoxycarbonylphenyl acrylate by means of experimental measurements and theoretical approaches, and bulk melt polymerization
Soykan,Cetin,Ozturk,Karaboga,Zalaoglu,Dogruer,Yildirim,Terzioglu
, p. 479 - 487 (2013)
This multidisciplinary study deals with not only the synthesis of p-benzophenoneoxycarbonylphenyl acrylate (BPOCPA) in the xylene solvent and production of Poly(BPOCPA) by bulk melt polymerization and solution methods but also the characterization of BPOC
Mechanochemical solid-state polymerization. VI. Quantum chemical considerations for structural criteria of mechanically polymerizable vinyl monomers
Kondo,Murase,Kuzuya
, p. 768 - 773 (1994)
To provide the structural criteria for mechanically polymerizable vinyl monomers in metallic vessels, we carried out the MO calculations (AM1 method) of several acrylamide, acrylate and styrene derivatives as model compounds for such reactions. It was found that the nature of LUMO of vinyl monomers is closely related to the capability for initiation of mechanochemical polymerization. The following requisite concerning the nature of LUMO was shown to be a necessary condition for the activity of such reactions: Even if the LUMO energy is lower than 0.166 eV in the AM1 scheme, the LUMO coefficient must be highly localized in the vinyl group, when the monomer does not meet this criterion, the introduction of a saturated group such as an alkyl group to insulate electronically the π-electron system of vinyl group from the rest of the molecules will lead to the mechanically polymerizable monomers.
A detailed survey for determination of the grafted semifluorinated acrylic compound effect on thermal, microstructural, free volume, mechanical and morphological features of HDPE
Cetin, Sedat,Ozturk Sen, Behiye,Soykan, Ugur,Tav, Cumali,Yahsi, Ugur
, (2020/03/19)
This study mainly aims to investigate the role of grafted semifluorinated acrylic compound in the crucial characteristic properties of high density polyethylene (HDPE). Graft copolymerization of the semifluorinated acrylic compound, 3,3,4,4,5,5,6,6,7,7,8,8,8-dodecafluoro-5-methyloctyl-4-(acryloyloxy) benzoate (ABCF13) onto HDPE within the different content levels of ABCF13 (5, 10, 15, 20, 30 and 40 %) was performed by bulk-melt polymerization method. The changes in the thermal, microstructural and free volume characteristics of graft coproducts with extent of grafting were investigated in detail by means of DSC, powder X-ray diffraction and PALS techniques, respectively. The experimental findings showed that the melting temperature of crystalline domains and crystallinity ofHDPE reached the maxima at the 15 % and 40 % ABCF13 contents, respectively. The grafting of ABCF13 onto HDPE also gave rise to significant expansion and contraction in lateral dimensions of orthorhombic unit cell parameters in the crystalline domains of HDPE. Moreover, PALS analyses depicted that the size of the free volumes increased almost linearly with the grafting percentage. As for mechanical behaviours of the graft products, remarkable improvements were achieved in especially tensile strength (from 18.75 MPa to 43.75 MPa) and impact strength (from 19.30 Mpa to 38.72 MPa). The morphological properties of the fractured surfaces obtained from tensile and impact tests of products were also examined by SEM analysis. The samples possessed completely homogeneous structure without any phase separation. A gradual transition from ductile behaviour to brittle nature was observed as the grafting level increased in the products.
Experimental and theoretical approaches for structural and mechanical properties of novel side chain LCP-PP graft coproducts
?etin, Sedat,?ztürk ?en, Behiye,Soykan, U?ur,Firat, Elif Esra,Yildirim, Gürcan
, p. 467 - 483 (2016/07/06)
The monomers p-biphenyloxycarbonylphenyl acrylate (BPCPA) and p-biphenyloxycarbonylphenyl methacrylate (BPCPMA) were synthesized by the reaction of p-acryloyloxybenzoyl chloride and p-methacryloyloxybenzoyl chloride with 4-hydroxybiphenyl, respectively, a
POLYMERIZABLE LIQUID CRYSTAL COMPOUND, POLYMERIZABLE LIQUID CRYSTAL COMPOSITION, LIQUID CRYSTALLINE POLYMER, AND OPTICALLY ANISOTROPIC MATERIAL
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Page/Page column 42, (2010/01/29)
A polymerizable liquid crystal compound shown by the following formula (I), a polymerizable liquid crystal composition that includes the polymerizable liquid crystal compound and a chiral compound polymerizable with the polymerizable liquid crystal compou
SYNTHESIS AND CHARACTERIZATION OF SOME THERMINALLY CYANO-SUBSTITUTED SIDE-CHAIN LIQUID CRYSTALLINE POLYACRYLATES
Lacoudre, Nelly,Borgne, Alain le,Spassky, Nicolas,Vairon, Jean-Pierre,Barny, Pierre le,et al.
, p. 113 - 128 (2007/10/02)
The synthesis of a series of liquid crystalline side-chain polyacrylates in which the mesogenic group is 1-(4-benzoyloxyphenyl)-2-(4'-cyanophenyl)ethane is reported.Methylenic spacer groups of different lengths have been used.Polymers were prepared by radical polymerization (AIBN as initiator) of the corresponding acrylates.The liquid crystalline nature of these polymers was established by calorimetric measurements, optical texture observations and X-ray investigations.For the polymer where n=6, the unusual I-N-SAd-Nre sequence was observed.
Anisotropic heat-curable acrylic-terminated monomers
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, (2008/06/13)
Novel heat-curable acrylic-terminated monomers are provided which exhibit an optically anisotropic melt phase at a temperature which enables it to undergo melt processing in the formation of molded articles, etc. The monomers are capable of being heat-cur
