Structural study of the ordering processes of cold drawn<i>trans</i>-1,4-polyisoprene samples in the heating process on the basis of wide- and small-angle X-ray scattering measurements

Ratri, Paramita Jaya; Tashiro, Kohji

doi:10.1088/1742-6596/1095/1/012029

Cited by 2 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in the literature, β crystal in TPI can transform into α crystal during heating, through melting‐recrystallization mechanism. [ 20,21,24 ] On the other hand, α crystal in TPI will “transform” into β crystal during stretching. [ 25,26 ] Chen et al.…”

Section: Introductionmentioning

confidence: 99%

“…[19] The polymorphic behavior of TPI is strongly affected by thermal history. Tashiro et al [19][20][21] systematically summarized the formation conditions of the two crystal forms. The TPI with predominant 𝛼 crystal (𝛼−TPI) can be prepared by slow cooling or isothermal crystallization in the temperature range of 40 °C-60 °C.…”

Section: Introductionmentioning

confidence: 99%

“…As shown in the literature, 𝛽 crystal in TPI can transform into 𝛼 crystal during heating, through melting-recrystallization mechanism. [20,21,24] On the other hand, 𝛼 crystal in TPI will "transform" into 𝛽 crystal during stretching. [25,26] Chen et al proposed that the mechanism of stretching-induced 𝛼 to 𝛽 transition in TPI is attributed to melting-recrystallization.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Crosslinking on the Stretch‐Induced Polymorphic Transition of Trans‐1,4‐Polyisoprene

Yang,

Zhang,

Zhao

et al. 2023

Macro Chemistry & Physics

View full text Add to dashboard Cite

Trans‐1,4‐polyisoprene (TPI) is a typical polymorphic polymer with two crystal modifications. The transition between two crystal modifications (α to β) occurs during stretching. The underlying mechanism is still under debate. In this work, the effects of crosslinking and strain rates on the crystal transition are studied. The TPI, which mainly contains α crystal (α−TPI), is crosslinked by γ‐ray radiation. The results show that crystalline morphology does not change after radiation. The melting temperature and yield stress of crosslinked α−TPI decrease with the irradiation dose. The structural evolution is studied by in situ wide‐angle X‐ray diffraction and small‐angle X‐ray scattering. During stretching, the content of β crystal (Xβ) of crosslinked α−TPI increases in the strain‐hardening region. The Xβ is lower in the sample with a higher radiation dose under the same strain. On the other hand, with increasing strain rate, the Xβ of the crosslinked sample exhibits a non‐monotonic variation. A parallel mechanical model consisting of amorphous and crystal fibrils is proposed to explain the experimental observations.

show abstract

Section: Introductionmentioning

confidence: 99%