1973
DOI: 10.1177/009524437300500404
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Thermoplastic Urethane Molecular Weight-Property Relations

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Cited by 54 publications
(22 citation statements)
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“…Within this broad transition, a peak that appeared as a melting endotherm was observed, centered around 70°C. This endotherm in similar systems reported 16,17,19 in the literature has been attributed to annealing effects. The DSC thermograms of the three silicon chain extender-based polyurethanes showed similar thermal transitions in the 0 to 140°C temperature range, except that the most prominent endotherm (centered at 68°C) was sharper than that of the control.…”
Section: Polyurethane Morphologysupporting
confidence: 79%
See 1 more Smart Citation
“…Within this broad transition, a peak that appeared as a melting endotherm was observed, centered around 70°C. This endotherm in similar systems reported 16,17,19 in the literature has been attributed to annealing effects. The DSC thermograms of the three silicon chain extender-based polyurethanes showed similar thermal transitions in the 0 to 140°C temperature range, except that the most prominent endotherm (centered at 68°C) was sharper than that of the control.…”
Section: Polyurethane Morphologysupporting
confidence: 79%
“…Further, the use of chain extender mixtures would allow one to control the level of phase mixing to overcome any incompatibility associated with PDMS macrodiol. The inherent light-stability of aliphatic polyurethanes, 19 combined with improvement in biostability and flexibility, might make such materials highly desirable for medical implant applications.…”
Section: Introductionmentioning
confidence: 99%
“…In the solid state, unique elastomeric properties are observed due to microdomain formation. [2][3][4] The so-called hard domains provide both physical crosslink sites and fillerlike reinforcement to the soft-segment matrix. At higher temperatures, the polymer forms a homogeneous viscous melt that can be processed by thermoplastic techniques such as injection molding, extrusion, and blow molding.…”
Section: Introductionmentioning
confidence: 99%
“…Most previous investigations have concentrated on polyurethanes based on hard segments derived from aromatic diisocyanates [1][2][3][4][5][6] with relatively few studies based on aliphatic diisocyanates. [7][8][9][10][11][12][13][14][15][16][17][18] The aliphatic diisocyanate 4,4Ј-dicyclohexyl methane diisocyanate (H 12 MDI) is commercially available and used as a building block for polyurethane elastomers that require light stability and resistance to hydrolysis. This diisocyanate is supplied as a mixture of three geometrical isomers (trans,trans, cis,trans, and cis,cis isomer) and generally has 10 -30% of trans-trans isomer in the mixture.…”
Section: Introductionmentioning
confidence: 99%