Preparation of fluorinated isotactic polypropylene by free radical reaction combining fluorinated reagent and BPO

Zhang, Jiaojiao; Yuan, Dingkun; Xia, Xiaoqi; Yu, Haiqing; Zhang, Shaomeng; Li, Chunman; Miao, Qing; Zhu, Feng; Huang, Qigu; Yi, Jianjun; Zhao, Zhentang

doi:10.1016/j.mtcomm.2021.102058

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…10a). 306 Furthermore, PP undergoes thermo- and light-induced radical halogenation using N -haloamides, which has been used to prepare fluorinated, 336 chlorinated, and brominated PP (Fig. 10c).…”

Section: Overview Of the Functional Upcycling Strategy For Different ...mentioning

confidence: 99%

“Functional upcycling” of polymer waste towards the design of new materials

et al. 2023

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Section: Overview Of the Functional Upcycling Strategy For Different ...mentioning

confidence: 99%

“Functional upcycling” of polymer waste towards the design of new materials

et al. 2023

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“…Later, Huang and coworkers developed a direct and economical route for the incorporation of fluorine atom into isotactic polypropylene ( i PP) through a free radical reaction. [34] Nfluorobenzenesulfonimide (NFSI) served as the fluorine transfer reagent, while benzoyl peroxide (BPO) was used as the initiator. The surface property and the thermal stability of fluorinated i PP (F-i PP) were greatly enhanced by performing the tests of the water contact angle, DSC and TGA.…”

Section: Cà Halogen Bond Installationmentioning

confidence: 99%

“…Under the optimized conditions, up to 37.9 mol % chlorination for P53 was determined with one equivalent of N ‐chloramide, while 16.4 mol % bromination for P54 was obtained, respectively. Later, Huang and coworkers developed a direct and economical route for the incorporation of fluorine atom into isotactic polypropylene ( i PP) through a free radical reaction [34] . N ‐fluorobenzenesulfonimide (NFSI) served as the fluorine transfer reagent, while benzoyl peroxide (BPO) was used as the initiator.…”

Section: Upcycling Of Polyolefins Into New Polymeric Materialsmentioning

confidence: 99%

Chemical Upcycling of Polyolefins through C−H Functionalization

Zhao,

Li,

Jiang

2023

Eur J Org Chem

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Polyolefins consist of abundant hydrophobic C−C and C−H bonds, and are considered as immensely potential untapped resources. Chemical upcycling offers a convenient and promising recycling strategy of polyolefins to produce newly‐functionalized polymeric materials, and high‐value added chemicals. The significant progress made in C–H functionalization reactions of alkane molecules provides new opportunities for improving polyolefin treatments. This review focuses on recent advancements in post‐modification routes, specifically the introduction of C–C and C–X (X = O, N, S, halogens and etc.) bonds onto polyolefin chain backbones, as well as degradation models involving homogeneous C–H functionalization. By emphasizing these developments, we aim to highlight the potential of chemical upcycling for enhancing the treatment of polyolefins.

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“…Combining the above comprehensively, based on our previous experience, − we recently discovered a novel phenol-oxygen bridged binuclear metallocene complex prepared with [Me 2 Si(C 5 H 4 ) 2 ]TiCl 2 and hydroquinone, which can effectively catalyze the copolymerization of ethylene-1-octene. The introduction of phenoxy groups can shield the axial sites more effectively and thus delay chain transfer and β-H elimination, increasing the polymer molecular weight.…”

Section: Introductionmentioning

confidence: 99%

Prominent Spatial Structure and Synergistic Linkage Effects in Bimetallic Titanium Olefin Polymerization Catalysts

Zhang

Cao

Guo

et al. 2022

Ind. Eng. Chem. Res.

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In this contribution, the binuclear Ti olefin polymerization catalyst 1,4-phenoxy{[Me 2 Si(C 5 H 4 ) 2 ]TiCl} 2 (Complex 2) was synthesized by the reaction of hydroquinone with [Me 2 Si(C 5 H 4 ) 2 ]TiCl 2 . Compared to mononuclear [Me 2 Si-(C 5 H 4 ) 2 ]TiCl 2 (Complex 1), due to the synergistic effect of bimetals, Complex 2 was thermally more stable and showed higher activity up to 1.36 × 10 6 g/(mol Ti h) for ethylene polymerization at 120 °C. Remarkably, adding the phenoxy group in front of the metal center gives the catalyst a denser coordination environment, and the β-H elimination reaction is slowed down, thereby increasing the molecular weight of the polymer. DFT calculations showed that the Ti−Cp distances in active species 2 were extended by 0.059 and 0.063 Å, respectively, compared to those in active species 1. This makes the space of the active center more spacious and easier to promote olefin polymerization. Consequently, the copolymer's 1-octene monomer incorporation rate reaches 16.21 mol %, with a fracture strain of 1140% and a stress recovery (SR) of 65%.

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Preparation of fluorinated isotactic polypropylene by free radical reaction combining fluorinated reagent and BPO

Cited by 4 publications

References 20 publications

“Functional upcycling” of polymer waste towards the design of new materials

“Functional upcycling” of polymer waste towards the design of new materials

Chemical Upcycling of Polyolefins through C−H Functionalization

Prominent Spatial Structure and Synergistic Linkage Effects in Bimetallic Titanium Olefin Polymerization Catalysts

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