Effects of gamma radiation on the impact strength of polypropylene (PP)/high density polyethylene (HDPE) blends

Wang, Wenzhao; Zhang, Xiaochao; Mao, Zongyuan; Zhao, Weiquan

doi:10.1016/j.rinp.2019.02.020

Cited by 38 publications

(26 citation statements)

References 30 publications

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“…has no effect on the mechanical properties of the greenhouse film, but the addition of activated Al 2 O 3 has a greater impact on the mechanical properties of the greenhouse film (the mechanical properties decline as the amount of activated Al 2 O 3 increased). [30][31] In addition, with the addition of excessive activated Al 2 O 3 , the mechanical properties of the greenhouse film rise sharply, indicating that the greenhouse film is fully activated. The elongation at break of ultrafine Al 2 O 3 -2.5 film decreases from 1069.0 after 24 h aging to 92.9 after 168 h aging; and for the films with ultrafine Al 2 O 3 -10, the elongation at break decreases from 967.8 after 24 h aging to 94.4 after 120 h aging; the result of the activated Al 2 O 3 -2.5 film indicates that the elongation at break decreases to 114.9 after 168 h aging; and for the films with activated Al 2 O 3 -5 and Al 2 O 3 -10, the results decrease to 140.6 and 89.2 after aging for 120 h, respectively, indicating that the more Al 2 O 3 (either ultrafine Al 2 O 3 or activated Al 2 O 3 ) are added, the faster the aging is [32][33][34][35] .…”

Section: Effect Of Ultrafine Al 2 O 3 and Activated Al 2 O 3 On Antmentioning

confidence: 99%

The preparation of Al₂O₃ based organic/inorganic composite films and the application in agricultural greenhouse

Zhang

Chen

Lai³

et al. 2021

J of Applied Polymer Sci

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The work presented herein focuses on developing the Al 2 O 3 based organic/ inorganic multifunctional composite films via an internal addition method in the presence of dripping agent, antifogging agent, light stabilizer and insulation barrier agent. The resulting composite films were systematically characterized using scanning electron microscope, FTIR, differential scanning calorimetry, UV, and tensile testing machine. The morphology changed obviously after introducing the inorganic fillers. In addition, the results indicated that the contact angle of the activated Al 2 O 3-10 film had the best stability and the film with ultrafine Al 2 O 3 possessed the best anti-dripping performance. The time of the first water drop of the film containing 10 g activated Al 2 O 3 (the activated Al 2 O 3-10) was 7 min and 18 s, and the time of each ten-drops was less than 120 s. The simulated anti-aging period of the films with antiaging agent was up to 423 days, which is superior to many other reported organic/inorganic composite films and can be applied to those extreme climate areas (such as Xinjiang, China).

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Section: Effect Of Ultrafine Al 2 O 3 and Activated Al 2 O 3 On Antmentioning

confidence: 99%

The preparation of Al₂O₃ based organic/inorganic composite films and the application in agricultural greenhouse

Zhang

Chen

Lai³

et al. 2021

J of Applied Polymer Sci

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“…However, the preparation of PE/PP long blocks and LCB copolymers are mainly through complex chemical synthesis [1,9,10] [[xxiv]]. This result indicates that the probability of the reaction of monomeric radicals with macromolecular radicals of the two components is similar.…”

Section: Introductionmentioning

confidence: 99%

In Situ Compatibilization of Isotactic Polypropylene and High-Density Polyethylene by a Melt Cobranching Reaction

Wang

Yang

et al. 2021

J Polym Environ

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Incompatible polypropylene (PP) and polyethylene (PE) are di cult to separate in mixed recycling streams such as waste plastic packaging, which makes these polyole n mixtures unsuitable for highquality products. In this work, based on the free radical branching reaction, a co-branching reaction of isotactic polypropylene (iPP) and high-density polyethylene (HDPE) blends was carried out in the presence of the peroxide, free radical regulator and multifunctional acrylate monomer, and a star-like long-chain branching (LCB) copolymer was acquired. The effect of in situ compatibilization on the structure and mechanical properties of iPP/HDPE was investigated, and the compatibilization mechanism was discussed. Results showed that the mechanical properties of the modi ed blends were largely improved, and e cient in-situ compatibilization of iPP and HDPE could be taken place in a wide process window. Moreover, the size of the dispersed phase in the modi ed blend was clearly decreased, and the interfacial thickness increased. Compared with the pure iPP/HDPE blend, the initial crystallization temperature of iPP in the modi ed iPP/HDPE blend was increased, and long branched chains of the LCB copolymer were physically entangled with the chemical identical homopolymers or even participate in the crystallization of iPP and HDPE. Thanks to the in situ compatibilization strategy, the compatibility of iPP/HDPE was signi cantly improved.

show abstract

Section: Introductionmentioning

confidence: 99%

In Situ Compatibilization of Isotactic Polypropylene and High-Density Polyethylene by a Melt Cobranching Reaction

Wang

Yang

et al. 2021

Preprint

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Incompatible polypropylene (PP) and polyethylene (PE) are difficult to separate in mixed recycling streams such as waste plastic packaging, which makes these polyolefin mixtures unsuitable for high-quality products. In this work, based on the free radical branching reaction, a co-branching reaction of isotactic polypropylene (iPP) and high-density polyethylene (HDPE) blends was carried out in the presence of the peroxide, free radical regulator and multifunctional acrylate monomer, and a star-like long-chain branching (LCB) copolymer was acquired. The effect of in situ compatibilization on the structure and mechanical properties of iPP/HDPE was investigated, and the compatibilization mechanism was discussed. Results showed that the mechanical properties of the modified blends were largely improved, and efficient in-situ compatibilization of iPP and HDPE could be taken place in a wide process window. Moreover, the size of the dispersed phase in the modified blend was clearly decreased, and the interfacial thickness increased. Compared with the pure iPP/HDPE blend, the initial crystallization temperature of iPP in the modified iPP/HDPE blend was increased, and long branched chains of the LCB copolymer were physically entangled with the chemical identical homopolymers or even participate in the crystallization of iPP and HDPE. Thanks to the in situ compatibilization strategy, the compatibility of iPP/HDPE was significantly improved.

show abstract

Effects of gamma radiation on the impact strength of polypropylene (PP)/high density polyethylene (HDPE) blends

Cited by 38 publications

References 30 publications

The preparation of Al₂O₃ based organic/inorganic composite films and the application in agricultural greenhouse

The preparation of Al₂O₃ based organic/inorganic composite films and the application in agricultural greenhouse

In Situ Compatibilization of Isotactic Polypropylene and High-Density Polyethylene by a Melt Cobranching Reaction

In Situ Compatibilization of Isotactic Polypropylene and High-Density Polyethylene by a Melt Cobranching Reaction

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Effects of gamma radiation on the impact strength of polypropylene (PP)/high density polyethylene (HDPE) blends

Cited by 38 publications

References 30 publications

The preparation of Al2O3 based organic/inorganic composite films and the application in agricultural greenhouse

The preparation of Al2O3 based organic/inorganic composite films and the application in agricultural greenhouse

In Situ Compatibilization of Isotactic Polypropylene and High-Density Polyethylene by a Melt Cobranching Reaction

In Situ Compatibilization of Isotactic Polypropylene and High-Density Polyethylene by a Melt Cobranching Reaction

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Product

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The preparation of Al₂O₃ based organic/inorganic composite films and the application in agricultural greenhouse

The preparation of Al₂O₃ based organic/inorganic composite films and the application in agricultural greenhouse