Group contribution analysis of the damping behavior of homopolymers, statistical copolymers, and interpenetrating polymer networks based on acrylic, vinyl, and styrenic mers

1988 ◽  
Vol 26 (8) ◽  
pp. 1627-1640 ◽  
Author(s):  
M. C. O. Chang ◽  
D. A. Thomas ◽  
L. H. Sperling
Keyword(s):  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Group Contribution ◽  
Contribution Analysis ◽  
Damping Behavior

A Quantitative Determination of the Damping Behavior of Acrylic Based Interpenetrating Polymer Networks

1986 ◽  
Vol 59 (2) ◽  
pp. 255-262 ◽  
Author(s):  
D. G. Fradkin ◽  
J. N. Foster ◽  
L. H. Sperling ◽  
D. A. Thomas
Keyword(s):  
Mechanical Energy ◽  
Polymer Networks ◽  
Chain Structure ◽  
Temperature Curve ◽  
Interpenetrating Polymer Networks ◽  
Glass Transitions ◽  
First Approximation ◽  
Damping Behavior ◽  
Secondary Transitions

Abstract The damping function, D.F., as derived from the area under the linearE″— temperature curve, expresses the amount of mechanical energy converted to heat per unit volume of material. Sometimes characteristics of the damping behavior of homopolymers and IPN's are more apparent in the linear E″—temperature plot, such as glass transitions and secondary transitions. Decrosslinking and/or annealing the IPN's have no effect on the D.F.'s, although these treatments significantly modify the shape of the E″—temperature curves as a result of molecular and phase rearrangements. Thus, to a first approximation, the area expressed by D.F. is a polymer chain characteristic, depending on the chain structure itself but not on crosslinking and/or annealing.

Research for Damping Behavior and Microstructure of Interpenetrating Polymer Networks Based on Multi-Components

2011 ◽  
Vol 328-330 ◽  
pp. 1177-1181
Author(s):  
Yong Qing Li ◽  
Xi Zhu ◽  
Zhong Luo ◽  
Wei Hong Sun
Keyword(s):  
Polymer Network ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Polymer Materials ◽  
Interpenetrating Polymer Network ◽  
Polymer Resin ◽  
Damping Behavior ◽  
Damping Loss Factor ◽  
Molecule Design ◽  
Absorption Theory

Based on the molecule design and energy absorption theory of polymer macromolecule materials, we synthesized a kind of multicomponents interpenetrating polymer network(IPN) which composed of polyurethane(PU), epoxy(EP) and unsaturated polymer resin(UPR). In order to further widen the damping temperature region of polymer materials, we introduced the polydimethylsiloxane (PDMS) into polyurethane(PU). Because of solubility parameter difference between PDMS and PU, we synthesized PDMS modified PU by blocking and grafting PDMS chain into PU main chain firstly. Then, a serious of interpenetrating polymer networks (IPN) which composed of PDMS-PU, EP and UPR were designed and synthesized. The damping performance and microstructure were characterized by using the spectrum of dynamic mechanical thermal analysis (DMTA) and the scanning electron microscope(SEM) respectively. The tested result indicated that the multicomponents IPN which modified by PDMS has wider temperature range and higher damping loss factor, and the PDMS grafting PU/EP/UPR shows good damping performance and microphase compatibility specially.

scholarly journals The microscopic distribution of hydrophilic polymers in interpenetrating polymer networks (IPNs) of medical grade silicone

Polymer ◽  
2021 ◽  
Vol 224 ◽  
pp. 123671
Author(s):  
Gregory N. Smith ◽  
Erik Brok ◽  
Martin Schmiele ◽  
Kell Mortensen ◽  
Wim G. Bouwman ◽  
...  
Keyword(s):  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Hydrophilic Polymers ◽  
Microscopic Distribution ◽  
Medical Grade

Organic-solvent-free electromembrane extraction based on semi-interpenetrating polymer networks

2021 ◽  
Author(s):  
Hang Mei ◽  
Huajing Liu ◽  
Qianqian Shang ◽  
Ying Dong ◽  
Stig Pedersen-Bjergaard ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Solvent Free ◽  
Electromembrane Extraction ◽  
Acidic Analytes

A versatile organic-solvent-free electromembrane extraction (EME) system, which could be successfully used for the extraction of both basic and acidic analytes, is proposed based on semi-interpenetrating polymer networks.

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