A novel synthesis of polybutadiene-based polyurethane binder and conductive graphene–polyurethane nanocomposites: a new approach to polybutadiene recycling

Rahmatpanah, Zahra; Nikje, Mir Mohammad Alavi

doi:10.1007/s00289-020-03288-z

Cited by 13 publications

(12 citation statements)

References 42 publications

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“…Nikje recently reported the preparation of nanocomposites of polybutadiene-based polyurethane and graphene. [199] Other examples of telechelic polymers modified with azides and alkynes to further CuAAC click-chemistry reactions were also reported in the literature, however, they are not related to diene rubbers. [43] The studies on telechelic PB and PI afore mentioned, are good models to understand the connection between enzymatic and chemical modification of rubbers.…”

Section: Combined Methodologies: Enzymatic and Chemical Modificationsmentioning

confidence: 94%

Enzymatic and Chemical Approaches for Post‐Polymerization Modifications of Diene Rubbers: Current state and Perspectives

Soares

Steinbüchel

2021

Macromolecular Bioscience

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Diene rubbers are polymeric materials which present elastic properties and have double bonds in the macromolecular backbone after the polymerization process. Post-polymerization modifications of rubbers can be conducted by enzymatic or chemical methods. Enzymes are environmentally friendly catalysts and with the increasing demand for rubber waste management, biodegradation and biomodifications have become hot topics of research. Some rubbers are renewable materials and are a source of organic molecules, and biodegradation can be conducted to obtain either oligomers or monomers. On the other hand, chemical modifications of rubbers by click-chemistry are important strategies for the creation and combination of new materials. In a way to expand the scope of uses to other non-traditional applications, several and effective modifications can be conducted with diene rubbers. Two groups of efficient tools, enzymatic, and chemical modifications in diene rubbers, are summarized in this review. By analyzing stereochemical and reactivity aspects, the authors also point to some applications perspectives for biodegradation products and to rational modifications of diene rubbers by combining both methodologies.

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Section: Combined Methodologies: Enzymatic and Chemical Modificationsmentioning

confidence: 94%

Enzymatic and Chemical Approaches for Post‐Polymerization Modifications of Diene Rubbers: Current state and Perspectives

Soares

Steinbüchel

2021

Macromolecular Bioscience

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“… 8 Especially, HTPB-based PUs have been extensively utilized as binders for solid propellants, explosives, adhesives, foams, coatings, sealants, elastomers, unsaturated polyesters, toughened polymers, and gas separation membrane applications. 8 − 13 HTPB as a soft segment of PU can react with isocyanate instead of polyether or polyester, giving excellent properties, such as low surface energy, low-temperature flexibility, superior abrasion resistance, high electrical insulation properties, high viscoelasticity, tenacity, and hydrolytic stability. 14 − 16 However, the presence of double bonds results in the poor stability of HTPB-based PUs in the air.…”

Section: Introductionmentioning

confidence: 99%

“…The HTPB with reactive functional groups can be applied to build ABA triblock copolymers, toughened resins, cross-linked elastomers, PB vitrimers, and supermolecular polymer gels . Especially, HTPB-based PUs have been extensively utilized as binders for solid propellants, explosives, adhesives, foams, coatings, sealants, elastomers, unsaturated polyesters, toughened polymers, and gas separation membrane applications. − HTPB as a soft segment of PU can react with isocyanate instead of polyether or polyester, giving excellent properties, such as low surface energy, low-temperature flexibility, superior abrasion resistance, high electrical insulation properties, high viscoelasticity, tenacity, and hydrolytic stability. − However, the presence of double bonds results in the poor stability of HTPB-based PUs in the air. Besides, as a widely utilized thermoset, HTPB-based PUs, which originate from petroleum resources, cannot be recycled, leading to environmental pollution and unsustainable industrial development.…”

Section: Introductionmentioning

confidence: 99%

Hydroxyl-Terminated Polybutadiene-Based Polyurethane with Self-Healing and Reprocessing Capabilities

Zhao

Yang

et al. 2022

ACS Omega

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Hydroxyl-terminated polybutadiene (HTPB)-based polyurethane (PU) networks play indispensable roles in a variety of applications; however, they cannot be reprocessed, resulting in environmental problems and unsustainable industrial development. In this work, recyclable HTPB-based PU vitrimer (HTPB-PU V ) networks are fabricated by introduction of a cross-linker 2,2′-(1,4-phenylene)-bis[4-mercaptan-1,3,2-dioxaborolane] (BDB) with dynamic boronic ester bonds into the network. Meanwhile, the BDB can stabilize the HTPB unit in the network by elimination of double bonds. The novel HTPB-PU V networks are constructed by a thiol-ene “click” reaction and an addition reaction between HTPB and cross-linker BDB and isocyanates (HDI). The dynamic HTPB-PU V networks are characterized by dynamic mechanical analysis (DMA) and Fourier transform infrared (FTIR). The obtained dynamic HTPB-PU V networks possess superior thermostability. Moreover, due to the presence of dynamic boronic ester bonds, the HTPB-PU V network topologies can be altered, contributing to the reprocessing, self-healing, and welding abilities of the final polymer. Through a hot press, the pulverized sample can be reprocessed for several cycles, and mechanical properties of the reprocessed samples are similar to those of the pristine one, with the tensile strength being even higher. The self-healed sample exhibits almost complete recovery from scratch after the healing treatment at 130 °C for 3 h. Moreover, a welding efficiency of 120% was achieved.

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“…The polybutadiene structure of LPB makes it have stronger interaction with the matrix rubber polymerized by butadiene monomer and other monomers. [ 16 ] In polymer compounds, plasticizers are mainly used to improve the processing by reducing hardness as well as viscosity and affect material properties. [ 17 ] If the addition of LPB as a plasticizer can improve the processing and material mechanical properties, LPB can be used as a non‐toxic and harmless new plasticizer to replace the traditional plasticizer (containing PAHs) to be added to the tread materials, which is of great significance to the future environmental protection and human health.…”

Section: Introductionmentioning

confidence: 99%

Influence of liquid polybutadiene on crosslinking network and mechanical properties of SSBR/BR

Liu

Han

Wang

et al. 2022

Polymer Engineering & Sci

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The treated distillate aromatic extract (TDAE) is widely used in tread compounds. However, polycyclic aromatic hydrocarbons (PAHs) contained in TDAE is serious harm to the environment and human. In this paper, liquid polybutadiene (LPB) of different brands was used to replace TDAE to plasticize solution polymerized styrene-butadiene rubber/cis-1,4-polybutadiene rubber (SSBR/BR). The effects of liquid polybutadiene instead of TDAE on crosslinking network and mechanical properties of matrix rubber were studied. LPB could participate in vulcanization reaction (different from TDAE).The results showed that LPB effectively reduced the critical strain amplitude of Payne effect (ameliorated filler dispersion) compared with TDAE plasticizing SSBR/BR. The degree of crosslinking decreased slightly, but there was no significant difference in rolling resistance and wet skid resistance at the same sulfur content. Changing the sulfur content, the wet skid resistance of tread and tensile strength of SSBR/BR vulcanizate plasticized by LPB were significantly improved, and the effect of LPB with high 1,2-vinyl content was better. In a

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A novel synthesis of polybutadiene-based polyurethane binder and conductive graphene–polyurethane nanocomposites: a new approach to polybutadiene recycling

Cited by 13 publications

References 42 publications

Enzymatic and Chemical Approaches for Post‐Polymerization Modifications of Diene Rubbers: Current state and Perspectives

Enzymatic and Chemical Approaches for Post‐Polymerization Modifications of Diene Rubbers: Current state and Perspectives

Hydroxyl-Terminated Polybutadiene-Based Polyurethane with Self-Healing and Reprocessing Capabilities

Influence of liquid polybutadiene on crosslinking network and mechanical properties of SSBR/BR

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