The effects of carbon materials with different dimensionalities on the flow instabilities of LLDPE (linear low density polyethylene)

Tian, Guannan; Liu, Jie; Sun, Tongjie; Wang, Xiangdong; Wang, Xin; Hu, Haiqing; Li, Chaoxu; Dong, Xia; Wang, Dujin

doi:10.1016/j.polymer.2018.01.085

Cited by 7 publications

(8 citation statements)

References 56 publications

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“…The viscosity of the filling systems was all lower than that of the pure SIS. It is different from the usual situation in that the fillers increase the viscosity of the systems 14,16 . Some studies on nanoscale fillers had found the similar effects: the filling of nanoscale fillers would lead to a decrease in viscosity 18,22,23,26 …”

Section: Resultsmentioning

confidence: 97%

“…It is different from the usual situation in that the fillers increase the viscosity of the systems. 14,16 Some studies on nanoscale fillers had found the similar effects: the filling of nanoscale fillers would lead to a decrease in viscosity. 18,22,23,26 Table 2 gave the viscosity reduction of various polymer nano-filled systems reported in the literature.…”

Section: Decrease In Shear Viscosity Caused By Fillersmentioning

confidence: 92%

“…There were few studies on the change of melt viscosity for the filling systems, especially for the systems with small amount of fillers. There was almost a consensus that the addition of fillers would increase the melt viscosity to some extent 14–17 …”

Section: Introductionmentioning

confidence: 99%

“…There was almost a consensus that the addition of fillers would increase the melt viscosity to some extent. [14][15][16][17] However, some researchers had found that the addition of nanoparticles would reduce the viscosity of the system. Michael E. Mackay et al 18 made a kind of organic nanoparticles cross-linked by single polystyrene chains first.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Decrease in viscosity of styrene‐isoprene‐styrene filling systems induced by micro elastic phase

Chi

Han

Tian

et al. 2021

J of Applied Polymer Sci

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The melt viscosity of triblock copolymer styrene-isoprene-styrene (SIS) filling systems decreased in some sense by adding 0.1 wt% fillers. The types of fillers included both nano-and non-nano fillers. It was insufficient to explain the phenomenon of viscosity reduction only from the view of nanoscale effects of particles. The results of SAXS and TEM enabled us to relate this behavior to the damage of PS microphase in SIS. The PS microphase acted as a strong entanglement point in the SIS system.When it was damaged, the entanglement among molecular chains weakened greatly, resulting in a decrease in viscosity. The dynamic viscoelasticity (complex viscosity, storage modulus, and loss modulus) of the filling systems was also studied.

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Section: Resultsmentioning

confidence: 97%

Section: Decrease In Shear Viscosity Caused By Fillersmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Decrease in viscosity of styrene‐isoprene‐styrene filling systems induced by micro elastic phase

Chi

Han

Tian

et al. 2021

J of Applied Polymer Sci

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“…It has been reported that the addition of GNPs dramatically improves mechanical and thermal behavior of LLDPE [13]. High surface area and dispersion of GNPs in the matrix of LLDPE are responsible for better tensile strength, thermal stability, change in crystallinity and electrical properties of LLDPE/GNPs nanocomposites as reported by Khanam et al (2016) [14].…”

mentioning

confidence: 85%

Statistical Optimization Using Response Surface Methodology for Enhanced Tensile Strength of Polyethylene/Graphene Nanocomposites

Busu

Chen

Shahdan

et al. 2021

IJIE

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Despite having remarkable features such as low density, ease of fabrication and recyclability, linear low-density polyethylene (LLDPE) has several drawbacks like poor stiffness and low creep resistance which fortunately can be improved by incorporating with other suitable nanofillers. In this study, graphene nanoplatelets (GNPs) that are well-known for its high surface area and superior stability were selected to reinforce the polymer network of LLDPE via melt blending. During mixing processing, the rotor speed, mixing temperature and mixing time parameters are manipulated with the aids of 5-level-3-factor central composite rotatable design (CCRD) in order to determine the optimization of processing parameters in preparing LLDPE/GNPs nanocomposites. The experimental data is fitted with the statistically significant quadratic model with R2 value of 0.8601. The results showed that the tensile strength of LLDPE/GNPs nanocomposites could be extended to 24.80 MPa. The optimum processing parameters for preparation of LLDPE/GNPs nanocomposites were found to be at 101 rpm rotor speed, 139.8oC of mixing temperature and 13.2 min of mixing time, resulting in LLDPE/GNPs nanocomposites with tensile strength of 24.11 MPa. Conclusively, our study has provided a novel statistical design of experiment to obtain the optimum processing parameters in preparing LLDPE/GNPs nanocomposites.

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Improved balance between dimensional stability, mechanical properties and processability of linear low density polyethylene for rotational molding

Gong

et al. 2023

J of Applied Polymer Sci

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The linear low density polyethylene (LLDPE) products made by rotational molding (RM) usually involve two main problems of poor dimensional stability and insufficient mechanical properties. Although the decline in thermal expansion coefficient and rise in mechanical strength can be attained by filling with inorganic particles, the melt fluidity of LLDPE, which is of great importance for RM, would be significantly reduced. In this study, a combination of crosslinker low‐temperature blending and partial chemical crosslinking strategy is employed to enhance the dimensional stability and mechanical properties of LLDPE without sacrificing the melt fluidity. The structure–property relationships in the crosslinked specimens are analyzed based on X‐ray diffraction, differential scanning calorimetry, thermogravimetric analysis, scanning electron microscopy, and dielectric spectrometry. The results show that our simple, low‐cost and universal strategy not only contributes to a better dimensional stability and significantly improved mechanical properties, but also endow the samples with promising processability and thermal stability.

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The effects of carbon materials with different dimensionalities on the flow instabilities of LLDPE (linear low density polyethylene)

Cited by 7 publications

References 56 publications

Decrease in viscosity of styrene‐isoprene‐styrene filling systems induced by micro elastic phase

Decrease in viscosity of styrene‐isoprene‐styrene filling systems induced by micro elastic phase

Statistical Optimization Using Response Surface Methodology for Enhanced Tensile Strength of Polyethylene/Graphene Nanocomposites

Improved balance between dimensional stability, mechanical properties and processability of linear low density polyethylene for rotational molding

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