How polydispersity of network polymers influences strain-induced crystal nucleation in a rubber

Zhang, Miaomiao; Zha, Liyun; Gao, Huanhuan; Nie, Yijing; Hu, Wenbing

doi:10.1007/s10118-014-1495-9

Cited by 25 publications

(13 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, both the enhanced nucleation and growth of shish-like elongated nuclei under sufficiently fast flows were investigated by Graham et al , Dynamic Monte Carlo (MC) simulations demonstrated that long chains retain the orientation memory after shear cessation, and crystallize into shish in priority, which will induce short-chain kebabs later on . In addition, dynamic MC simulations of strain-induced polymer crystallization have been performed, − which improved our substantial understanding on flow-induced polymer crystallization. On the other hand, dynamic MC simulations were also employed to investigate shear-stress-induced coil deformation in the driven flows. − …”

Section: Introductionmentioning

confidence: 99%

Shish-Kebab Crystallites Initiated by Shear Fracture in Bulk Polymers

et al. 2018

View full text Add to dashboard Cite

The study of shear-induced polymer crystallization has so far overlooked heterogeneous crystal nucleation of shish-kebab crystallites, which can be initiated by the stretched local polymer chains in the sporadic events of shear fracture upon sudden startup or cessation of polymer shear flow or in the memory of these events. We performed dynamic Monte Carlo simulations of a binary blend of short and long polymers and investigated the formation process of shish-kebab crystallites in a driven field with Poiseuille-flow-like gradient forces presumably generated around the shear layer of melt fracture. The results demonstrated the synergetic coil-extension and segregation behaviors of long-chain fractions upon precursor formation, which lead to a discontinuous crystalline structure along the shish. We found that the shear fracture hypothesis can reconcile several controversial experimental arguments on the precursor formation of shish-kebab crystallites in shear-induced polymer crystallization.

show abstract

Section: Introductionmentioning

confidence: 99%

Shish-Kebab Crystallites Initiated by Shear Fracture in Bulk Polymers

et al. 2018

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6][7][8][9][10][11] Recently, by means of dynamic Monte Carlo simulations of a simple lattice polymer model, crystal nucleation switching from the intramolecular to the intermolecular modes has been observed, 12 and the hierarchical trends of chain folding in the crystallites revealed the specialty of strain-induced crystal nucleation, crystal growth and melting recrystallization behaviors. 13 Besides linear homopolymers, some structural factors such as binary chain lengths, 14 random copolymers, [15][16][17] solutions 18 and blends 19 have been systematically studied. Now we go further to study the effects of short-chain branches.…”

Section: Introductionmentioning

confidence: 99%

Effects of short‐chain branches on strain‐induced polymer crystallization

Guan

Wang

et al. 2018

Polymer International

View full text Add to dashboard Cite

We performed dynamic Monte Carlo simulations of a lattice polymer model to investigate strain‐induced crystallization behaviors of short‐chain branched polymers with variable sequence distributions, branch numbers and lengths, and their blending compositions with linear polymers. The results revealed that the branch density and distribution bring dominant effects. In the blends, there is no phase separation prior to crystallization, except that strain‐enhanced mixing is temporarily hindered by chain folding upon crystallization. Our observations shed lights onto the strain‐induced crystallization of short‐chain branched polymers. © 2018 Society of Chemical Industry

show abstract

“…On‐lattice dynamic MC simulations have been widely applied to investigate polymer crystallization behaviors. For instance, Hu and coworkers have applied dynamic MC simulations of lattice polymers to systematically investigate microscopic origins of polymer crystallization behaviors . Previously, we also used on‐lattice dynamic MC simulations to study the crystallization mechanism of nanofiller‐induced polymer crystallization, confined polymer crystallization, and crystallization behaviors of polymers grafted on a substrate .…”

Section: Simulation Detailsmentioning

confidence: 99%

Dynamic Monte Carlo simulations of competition in crystallization of mixed polymers grafted on a substrate

Nie

Liu

et al. 2018

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

Nowadays, preparation of poly(lactide) (PLA) with high content of stereocomplex crystallites (SCs) is receiving more and more attentions. The stereocomplex formation between enantiomeric poly(l‐lactide) and poly(d‐lactide) can efficiently improve the corresponding mechanical properties and thermal stability. In the current work, using dynamic Monte Carlo simulations, the microscopic mechanism of SC formation in grafted polymers was investigated. The increase in grafting density can lead to the enhancement of SC formation. On one hand, the miscibility between the chains of different types can be improved due to the grafting. On the other hand, the increase in grafting density can result in the higher degree of chain extension and the change in crystal nucleation and growth modes. The changes facilitate the stereocomplex formation. These findings not only provide an effective way to prepare PLAs with high content of SCs, but also reveal the underlying mechanisms controlling the SC formation. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 89–97

show abstract

How polydispersity of network polymers influences strain-induced crystal nucleation in a rubber

Cited by 25 publications

References 9 publications

Shish-Kebab Crystallites Initiated by Shear Fracture in Bulk Polymers

Shish-Kebab Crystallites Initiated by Shear Fracture in Bulk Polymers

Effects of short‐chain branches on strain‐induced polymer crystallization

Dynamic Monte Carlo simulations of competition in crystallization of mixed polymers grafted on a substrate

Contact Info

Product

Resources

About