Polyurethane Interpenetrating Polymer Networks. 3. Viscoelastic Properties of Polyurethane-Poly(methyl methacrylate) Interpenetrating Polymer Networks

Kim, Sung Chul; Klempner, D.; Frisch, K.C.; Frisch, H. L.

doi:10.1021/ma60060a004

Cited by 59 publications

(26 citation statements)

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“…The This phenomenon was also observed by Kim et al 1 The phase conversion can verify our former reason is that the structure of the hard segment area is regular, and there exists a strong hydrogen conclusion that by increasing the MMA content, the tensile strength of the polymers increases, bonding, 6 which makes the IPN easy to orientate and crystallize. The decrease of the hard segment while the elongation at break decreases.…”

Section: Resultssupporting

confidence: 80%

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Morphological structure and mechanical properties of polyurethane modified with methyl methacrylate

Wang

Shi

Zhang

1998

J of Applied Polymer Sci

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Three kinds of polyurethane-poly(methyl methacrylate) (PU-PMMA), that is, linear polymer, block copolymer, and interpenetrating polymer network (IPN), were synthesized by a simultaneous polymerization process, respectively. The effects of several factors such as ultraviolet (UV) setting, heat setting, chemical composition, and physical structure on the morphological structure and mechanical properties of polymers were studied by scanning electron micrograph, dynamic mechanical loss spectrum, and mechanical tests. The results show that PU-PMMA is a partially compatible system with a two-phase structure; the linear polymer has the highest elongation at break, and IPN has the strongest tensile strength, while the block copolymer has poor mechanical properties. In addition, the UV setting block copolymer and IPN system, with regular microphase domain structures, have higher tensile strength and elongation at break than those of heat setting polymers. With MMA content and hard segment in PU increasing, the tensile strength increases, and the elongation decreases.

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Section: Resultssupporting

confidence: 80%

“…The PU-PMMA system has been one of the focus of interpenetration poly-EXPERIMENTAL mer network (IPN) study. In 1970s, Kim et al 1 studied the structural morphology; and in 1980s, Raw Materials Jin et al 2 reported the polymerization kinetics. The raw materials used in the experiment were listed in Table I.…”

Section: Introductionmentioning

confidence: 99%

Morphological structure and mechanical properties of polyurethane modified with methyl methacrylate

Wang

Shi

Zhang

1998

J of Applied Polymer Sci

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“…Part of the IPN converts from the continuous phase to the disperse phase, which acts as enhancer to the membrane's mechanical properties. 30 The phase conversion verifies that by increasing the MMA content, the tensile strength of the polymers increases, while the elongation at break decreases. The IPNs with more crosslinked structure and stiffness possess higher tensile strength than that of the PU and because of the chemical crosslinking and physical tangling effect, the tensile strength of IPN5 is the highest.…”

Section: Mechanical Propertiesmentioning

confidence: 70%

“…There are many IPN studies of PU-PMMA system. Kim 6 studied the structural morphology and Jin et al 7 reported the polymerization kinetics.…”

Section: Introductionmentioning

confidence: 99%

Properties and pervaporation separation of hydroxyl‐terminated polybutadiene‐based polyurethane/poly(methyl metharcylate) interpenetrating networks membranes

Tsai

Huang

Chang

et al. 2007

J of Applied Polymer Sci

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Hydroxyl-terminated polybutadiene (HTPB), 4,4 0 -dicyclohexyl methane diiscyanate (H 12 MDI), and 1,4-butane diol are used to synthesize polyurethane (PU) solutions by two-stage process. Interpenetrating networks (IPNs) of HTPB-based PU and poly(methyl methacrylate) (PMMA) with HTPB/MMA (wt/wt % ratio) 5 2.0, 1.5, 1.0, 1.5, 0.8, and 0.6, which are designated as IPN1 to IPN5, respectively, are synthesized by sequential polymerization technique. Thermal properties, tensile strength, and contact angle of membranes increase with the increase of MMA content, while the elongation of membranes show the reverse trend. Characterization of membranes are investigated by C¼ ¼C/C¼ ¼O absorption ratio and infrared absorption frequency shiftment. These PU and IPN membranes are used for the separation of ethanol/water and isopropanol/water solution by pervaporation test. IPN3 membrane possesses the largest pervaporation permeability and the separation factor. The pervaporation results of ethanol/ water feed has the same trend as that of isopropyl alcohol (IPA)/water solution.

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“…The IPNs based on general polyurethane (PU) and vinyl polymers have been widely investigated [7,81. The work described here selects high elastic polyurethane based on hydroxyl-terminated polyepichlorohydrin (PECH), and hard glassy poly(methy1 methacrylate) (PMMA) to prepare IPNs, with the aim of obtaining either reinforced elastomer or toughened plastics by adjusting the composition PU/PMMA.…”

Section: Introductionmentioning

confidence: 99%

Polyepichlorohydrin Polyurethane/Poly(methyl methacrylate) Interpenetrating Polymer Networks

Han

Chen

Guo

1996

Polym. Adv. Technol.

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Polyurethane (PU) based on polyepichlorohydrin/poly(methyl methacrylate) (PECH/PMMA) interpenetrating polymer networks (IPNs) was synthesized by a simultaneous method. The effects of composition, hydroxyl group number of PECH, NCO/OH ratio and crosslinking agent content in IPNs were investigated in detail. Some other glycols, such as poly(ethylene glycol), poly(propylene glycol) and hydroxyl‐terminated polybutadiene, were also used to obtain PU/PMMA IPNs. The interpenetrating and fracture behaviors of the IPNs are explained briefly.

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Polyurethane Interpenetrating Polymer Networks. 3. Viscoelastic Properties of Polyurethane-Poly(methyl methacrylate) Interpenetrating Polymer Networks

Cited by 59 publications

References 0 publications

Morphological structure and mechanical properties of polyurethane modified with methyl methacrylate

Morphological structure and mechanical properties of polyurethane modified with methyl methacrylate

Properties and pervaporation separation of hydroxyl‐terminated polybutadiene‐based polyurethane/poly(methyl metharcylate) interpenetrating networks membranes

Polyepichlorohydrin Polyurethane/Poly(methyl methacrylate) Interpenetrating Polymer Networks

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