The equilibrium melting temperature of cis-polyisoprene

Dalal, Eddy N.; Taylor, Kevin; Phillips, P. J.

doi:10.1016/0032-3861(83)90182-9

Cited by 45 publications

(39 citation statements)

References 6 publications

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“…Here, we comment on the implication of the [29,38]. Thus, it confirms that σe for straininduced crystal in cross-linked NR is below the measurement limit.…”

Section: Resultssupporting

confidence: 71%

Formation of Crystallites with Low Surface Energy

Tosaka

Oue

Gros

et al. 2018

JFST

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“…Here, we comment on the implication of the [29,38]. Thus, it confirms that σe for straininduced crystal in cross-linked NR is below the measurement limit.…”

Section: Resultssupporting

confidence: 71%

Formation of Crystallites with Low Surface Energy

Tosaka

Oue

Gros

et al. 2018

JFST

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“…(7) was utilized for the calculation of T m,c , where T m,1 and DH 1 were cited as 308.5 K and 15.6 cal/g in Refs. [28,29], respectively. As the density of peroxide-crosslinked NR samples was ca.…”

Section: Resultsmentioning

confidence: 97%

Strain-induced crystallization of peroxide-crosslinked natural rubber

Ikeda

Yasuda

Makino

et al. 2007

Polymer

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“…First, we have to check if the difference in i would be large enough to be detectable. 17 ) were used. At room temperature, SIC started at % 3.…”

Section: Incipient Strain Of Crystallizationmentioning

confidence: 99%

Strain-Induced Crystallization of Crosslinked Natural Rubber As Revealed by X-ray Diffraction Using Synchrotron Radiation

Tosaka

2007

Polym J

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ABSTRACT:Strain-induced crystallization (SIC) of natural rubber (NR) has been extensively studied even before the advent of macromolecular physics. However, there are still some unsolved basic issues in this field. In this review article, classic studies on SIC of NR are briefly introduced, and then recent results by synchrotron X-ray diffraction studies in separate papers by different authors are categorized and interpreted on the basis of molecular models. Cyclic deformation experiments provided information on partial orientation of the network-chains, on nucleation and morphological changes of crystals and on stress field around the strain-induced crystals. On the other hand, experiments under constant strain provided information on kinetics of SIC, on stress relaxation due to SIC, and so on. The experimental results could be explained under the assumption that the SIC is dominated by strain, and that the crystals are of foldedchain type. However, in order to consistently explain the various experimental results, we have to establish a unified molecular model of the network structure. [doi:10.1295/polymj.PJ2007059] KEY WORDS Network-chain Density / Crosslinking / Supercooling / Entropy / Rubber Elasticity / Crystallite Size / Entanglement / Natural rubber (NR) from Hevea latex is an indispensable material for many industrial and household applications, 1 which is constituted of cis-1,4-polyisoprene (ca. 94%) and non-rubber components such as proteins (ca. 2%) and lipid (ca. 3%).2 The versatility of the plant-derived NR is mainly due to its outstanding tensile properties and the good crack growth resistance. We still cannot reproduce the good performance of the NR products using synthetic cis-1,4-polyisoprene rubber (IR). The superiority of NR has been thought to originate from its ability to crystallize immediately by expansion; by contrast, crystallinity of IR is not as high as NR because of the lower regularity of the main-chain structure. 2,3 In this context, straininduced crystallization (SIC) of NR has been extensively studied even before the advent of macromolecular physics.

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The equilibrium melting temperature of cis-polyisoprene

Cited by 45 publications

References 6 publications

Formation of Crystallites with Low Surface Energy

Formation of Crystallites with Low Surface Energy

Strain-induced crystallization of peroxide-crosslinked natural rubber

Strain-Induced Crystallization of Crosslinked Natural Rubber As Revealed by X-ray Diffraction Using Synchrotron Radiation

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