Zobrazeno 1 - 10
of 16
pro vyhledávání: '"H. K. Shobha"'
Autor:
M. Sankarapandian, T. E. Glass, Albert R. Shultz, James E. McGrath, H. K. Shobha, Lenore Rasmussen, Anthony J. Pasquale, Timothy Edward Long
Publikováno v:
Polymer. 47:4042-4057
A novel, high-refractive index homopolymer was produced by incorporating carbazole and phenol into the methacrylate monomer structure. The reaction of phenol with 9-(2,3-epoxypropyl)-carbazole, followed by the reaction of the carbazole phenoxy-based
Autor:
M. Sankarapandian, Qing Ji, H. K. Shobha, Sheng Wang, and A. R. Shultz, James E. McGrath, T. E. Glass, Hong Zhuang
Publikováno v:
Macromolecules. 34:8051-8063
A number of new aryl phosphorus-containing polymers were found to be miscible with the commercially significant bisphenol A-based poly(hydroxy ether)s (PHE) over the entire composition range by dif...
Autor:
Yu Seung Kim, H. K. Shobha, M. Sankarapandian, H. Johnson, Donald G. Baird, James E. McGrath, P. Rangarajan
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 39:2904-2910
The synthesis of aromatic polyphosphonates based on the step polymerization of various bisphenols and dichlorophenyl phosphine oxide was investigated. The effect of catalyst, type, concentration, and polymerization time were systematically varied to
Publikováno v:
Journal of Materials Science Materials in Medicine. 8:465-468
Several novel dimethacrylates have been developed as alternative matrix materials for dental composite applications. For the cured bulk polymers the equilibrium water uptake, reduction of glass transition temperatures (Tgs) by water sorption, refract
Publikováno v:
Journal of Materials Science Materials in Medicine. 8:283-286
The influence of chemical structure on the important properties of composite matrix resins is being systematically investigated. This study addresses the relationships between pendent side chain structures, viscosity and curing shrinkage. In particul
Publikováno v:
Journal of Materials Science Materials in Medicine. 8:385-389
Several novel dimethacrylate monomers of propoxylated diphenols have been synthesized to establish a correlation between their structure and the important properties of viscosity, curing shrinkage and wetting behaviour. These dimethacrylates were des
Publikováno v:
Journal of Materials Science Materials in Medicine. 8:583-586
The effect of dilution of 2,2-bis-(4-(2-hydroxy-3-methacryloxyprop-1oxy) phenyl) propane (bis-GMA) with triethylene glycol demethacrylate (TEGDMA) on the extent of polymerization, Ep, has been studied using differential scanning calorimetry. The isot
Autor:
M. Sankarapandian, H. K. Shobha, S. Kalachandra, A. R. Shultz, D. F. Taylor, James E. McGrath
Publikováno v:
Macromolecular Symposia. 111:73-83
The free radical polymerization of several new dimethacrylates initiated by azobisisobutyronitrile (AIBN) at various temperatures was investigated by differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR), and solid state NMR. Th
Autor:
Kaushal Kishore, H. K. Shobha
Publikováno v:
ChemInform. 24
The flow and vaporization behaviors of long-chain esters of varying molecular weights (300-900) ana branching (linear, Y-shaped, and +-shaped molecules) have been studied. The flow behavior is found to depend on the structure as well as the molecular
Autor:
Kaushal Kishore, H. K. Shobha
Publikováno v:
Macromolecules. 25:6765-6769
This is the first comprehensive report on the influence of structure and molecular weight of long-chain esters on their plasticization behavior with PVC. Below a molecular weight of 550, there is a decrease in $T_g$, with molecular weight in linear,