Results 141 to 150 of about 183,821 (190)
Some of the next articles are maybe not open access.
Functional Alkyl-Ferrocene Grafted Hydroxyl Terminated Polybutadiene
ChemistrySelect, 2021Abstract Grafting of functional ferrocene molecules in the backbone of hydroxyl terminated polybutadiene (HTPB) without altering physical characteristics such as viscosity, hydroxyl value, molecular weight of the pristine HTPB remains as an important challenge owing to the difficulty in synthesizing appropriate functional ferrocene ...
Tushar Jana +2 more
exaly +2 more sources
Synthesis of Azide-Functionalized Hydroxyl-Terminated Polybutadiene
Journal of Energetic Materials, 2016This article reports ways to functionalize hydroxyl-terminated polybutadiene (HTPB) by azide groups to impart energetic properties to the polymer. Two different synthetic approaches were explored to synthesize azide-functionalized hydroxyl-terminated polybutadiene (azide-HTPB).
Pawan K Khanna, Shaibal Banerjee
exaly +2 more sources
Polymer, 1994 Abstract Thermal ageing of hydroxyl-terminated polybutadiene propellant binders was carried out at various temperatures between 50 and 100°C. The changes caused by this treatment in properties such as melt viscosity, functional end-groups, molecular weight, tensile strength, elastic modulus and ultimate elongation were examined.
A. Akbaş, S. Aksoy, N. Hasırcı
openaire +3 more sources
The molecular characteristics of hydroxyl-terminated polybutadiene
British Polymer Journal, 1985AbstractThree samples of a commercial hydroxyl‐terminated polybutadiene, Arco R45M. were characterised with respect to number‐average and weight‐average molar mass, intrinsic viscosity, number‐average hydroxyl functionality and effective functionality for gelation.
Colin Booth
exaly +2 more sources
Studies on Hydroxyl Terminated Polybutadiene Toughened Phenolic Resin
High Performance Polymers, 2006Phenolic novolac was modified with hydroxyl terminated polybutadiene (HTPB) using resole as compatibilizer. These systems were characterized by differential scanning calorimetry, and IR analysis. Neat resin castings were prepared with varying percentages of HTPB.
C. Nirmal +4 more
exaly +2 more sources
Polymer, 2016
Abstract A series of hydroxyl functionalized polybutadienes has been prepared by combining the oxidolysis and reduction of cis-polybutadiene rubber (BR). For the first time, multi-hydroxyl polybutadiene (MHPB) with α,ω- and intrachain hydroxyl groups was synthesized through the simultaneous reduction of –CHO and epoxy groups in epoxidized aldehyde ...
Suyun Jie, Bo-Geng Li, Anqi Wang
exaly +2 more sources
Abstract A series of hydroxyl functionalized polybutadienes has been prepared by combining the oxidolysis and reduction of cis-polybutadiene rubber (BR). For the first time, multi-hydroxyl polybutadiene (MHPB) with α,ω- and intrachain hydroxyl groups was synthesized through the simultaneous reduction of –CHO and epoxy groups in epoxidized aldehyde ...
Suyun Jie, Bo-Geng Li, Anqi Wang
exaly +2 more sources
On the gas permeability of hydroxyl terminated polybutadiene based polyurethane membranes
Journal of Membrane Science, 1995Abstract A series of hydroxyl terminated polybutadiene (HTPB) based polyurethanes (PU) were synthesized by solution polymerization with different kinds of polyols and diisocyanates, hard segment contents, NCO OH value, polymerization methods and annealing time.
Shih-Liang Huang, Juin-Yih Lai
exaly +2 more sources
Reaction between azide molecule with hydroxyl terminated polybutadiene
, 2018 S.134.1-134.9In previous work the compatibility between azide molecules and HTPB was discussed in terms of Gel Permeation Chromatography (GPC) and continuously recording Vacuum Stability Test (VST) results.
Ferrapontoff Lemos, Mauricio +4 more
openaire +2 more sources
Characterization of hydroxyl-terminated polybutadiene
Polymer Bulletin, 1997The structures of hydroxyl terminated polybutadienes (HTPB) obtained by free radical polymerization of butadiene in ethanol medium initiated by thermal and photochemical hydrogen peroxide decomposition were studied. The incorporation of alcohol in the polymer chain ends was evidenced by 1 H and 13 C NMR spectroscopy.
W. D. Vilar +3 more
openaire +2 more sources
Characterization of hydroxyl-terminated polybutadiene
Polymer Bulletin, 1994Commercial samples of hydroxyl terminated polybutadienes (HTPB) were analysed by 1H and 13C NMR spectroscopy, in regard to hydroxylated end groups. The results were discussed and compared with those reported so far.
W. D. Vilar +2 more
openaire +2 more sources