Bio-based polyurethane reactive hot-melt adhesives derived from isosorbide-based polyester polyols with different carbon chain lengths

Pan, Xueyi; Tian, Yixiang; Li, Jianbo; Tan, Qinggang; Ren, Jie

doi:10.1016/j.ces.2022.118152

Cited by 18 publications

(8 citation statements)

References 42 publications

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“…A relatively large amount of small-sized spherulites in PCLA28-diol and the relatively high crystallinity (shown in Table S2 in the Supporting Information) possessed by PCL-diol may facilitate the higher eventual lap-shear strengths of PUHRA-PCLA28 and PUHRA-PCL. The lap-shear strengths of PURHA-PCLA28 and PURHA-PCL on the PC substrate are 8.85 and 8.05 MPa, respectively, which are impressive among reported PURHAs. ,,,− In addition, we found that the lap-shear strength of most PURHAs on the three substrates reached close to the eventual lap-shear strength after 3 days of curing, which was consistent with the change of lap-shear strength of PURHAs in industrial applications.…”

Section: Resultssupporting

confidence: 81%

“…7,10,11 However, most raw materials required to synthesize polyurethane resins are petroleum-based and nonrenewable, unfavorable for achieving the carbon neutrality target. 12 Consequently, there has been extensive research on the utilization of bio-based raw materials such as castor oil, 13 soybean oil, 14 lignin, 15 isosorbide, 16 and 1,3-propanediol to 7 obtain bio-based PURHAs. For example, Santan et al 17 presented a simple way for preparing a solvent-free castor oilbased polyurethane adhesive with adjustable properties.…”

Section: Introductionmentioning

confidence: 99%

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Eco-Friendly Polyurethane Reactive Hot-Melt Adhesive Derived from Poly(ε-caprolactone-co-lactic acid) Diols

Wang,

Yuan,

Pan

et al. 2023

ACS Appl. Polym. Mater.

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Due to the exhaustion of fossil resources and the degradation of the environment, there is an increasing utilization of eco-friendly materials as substitutes for petroleum-derived materials. In this work, a series of poly(ε-caprolactone-co-lactic acid) diols were synthesized via one-pot ring-opening polymerization with different lactic acid (LA)/ε-caprolactone (CL) feed ratios. Subsequently, the eco-friendly diols were mixed with polyether diol, 4,4′-diphenylmethane diisocyanate (MDI), and other additives to produce polyurethane reactive hot-melt adhesives (PURHAs). The enhancement of LA/CL feed ratios correspondingly led to an increase in the glass transition temperature (T g) of the eco-friendly polyester diols. The differential scanning calorimetry (DSC) data demonstrated that PCL-diol had the highest crystallinity, and the polarizing optical microscopy (POM) observations revealed the smallest spherulite size in PCLA28-diol. Thermogravimetric analysis (TGA) results indicated that the 5 wt % loss temperature (T5) of PURHAs surpassed 265 °C. Tensile testing showed that the elongation at break of PURHAs containing PCL segments increased by at least eight times compared to PURHA without PCL segments. Lap-shear testing illustrated that a PURHA with a higher LA/CL ratio exhibits higher green strength. In addition, PUHRA-PCLA28 derived from PCLA28-diol and PUHRA-PCL derived from PCL-diol possessed better tensile and lap-shear strengths. Notably, the lap-shear strengths of PUHRA-PCLA28 and PUHRA-PCL on a PC substrate reached impressive values of 8.85 and 8.05 MPa, respectively. These bio-based PURHAs synthesized from eco-friendly polyester diols with different LA/CL ratios show potential applications in electronic appliances, the automotive industry, and construction materials.

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Section: Resultssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Polyurethane Reactive Hot-Melt Adhesive Derived from Poly(ε-caprolactone-co-lactic acid) Diols

Wang,

Yuan,

Pan

et al. 2023

ACS Appl. Polym. Mater.

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“…(b) Photograph of 25 kg of ethanol lifted by two steel plates sandwiched with a thin m(PVA 50 - b -PMA 216 ) film, and the inset is the illustration of the microphase-separated microstructure of the adhesive. (c) Comparison of the shear strength and biomass content of m(PVA 50 - b -PMA 216 ) and literature. − …”

Section: Resultsmentioning

confidence: 99%

Sustainable Multiblock Copolymer Elastomers Derived from Lignin with Tunable Performance toward Strong Adhesives and UV-Shielding Materials

Tang

Wang

Wen

et al. 2023

ACS Sustainable Chem. Eng.

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With the increasing concern about global environmental issues, reducing the carbon footprint to achieve carbon neutrality has been particularly important. Sustainable multiblock copolymer elastomers (MBCPEs) have received tremendous interest due to their unprecedented performance and huge potential applications. However, complex multistep polymerization and postpolymerization processes are needed to design MBCPEs. In this work, a series of MBCPEs, in which vanillin acrylate (VA) derived from lignin was selected as the renewable rigid segments for the glassy block, while methyl acrylate (MA) was chosen as the soft segments for the rubbery block, were prepared by two successive reversible addition–fragmentation chain transfer (RAFT) polymerization processes with polytrithiocarbonate (PTTC). These thermally stable MBCPEs exhibit distinct microphase-separated morphology, where the hard poly(vanillin acrylate) (PVA) blocks self-assemble into discrete glassy domains serving as the physical cross-linking points in the soft poly(methyl acrylate) (PMA) matrix. The macroscopic mechanical performance, such as tensile strength, stretchability, toughness, and elastic recovery, can be adjusted well by changing the molecular weights and PVA contents. Moreover, these sustainable MBCPEs can be applied as strong adhesives and excellent UV-shielding materials, broadening their potential applications. This novel strategy is convenient and robust by combining RAFT polymerization and renewable resources toward high-performance MBCPEs, which can open a new avenue for the development of sustainable biobased elastomers.

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“…The aromatics-polyester industry chain is a crucial component of the petrochemical industry with significant importance. − In recent years, there has been a global increase in demand for high-purity organic substances, driven by the rapid growth of industries such as food, fine chemicals, pharmaceuticals, and polymer material engineering . Para-xylene (PX) plays a vital role as a raw material in the polyester industry, and it serves as a vital connection between the chemical and refining sectors. − Currently, the primary method employed by the industry to obtain high-purity PX is to separate and purify PX from the mixed xylene raw material liquid .…”

Section: Introductionmentioning

confidence: 99%

Online In Situ Real-Time Experimental Investigation of the Crystallization Characteristics and Kinetic Models during the Nucleation and Growth Process of Para-Xylene Suspension Crystallization

Dong,

Wu,

Wang

et al. 2024

Ind. Eng. Chem. Res.

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The environmentally friendly and efficient preparation of high-purity P-xylene (PX) through suspension crystallization technology holds great significance for further advancement of the petrochemical industry. This review innovatively conducts experimental research on the entire process of PX intermittent suspension crystallization without the addition of crystal seeds in order to further clarify the details of the PX crystallization behavior. Online in situ imaging technology is used for the first time to monitor the real-time changes in the shape and particle size information on PX crystals during the crystallization process of low melting point xylene systems. Then, we derive the nucleation and growth kinetic equations of PX crystallization without adding seeds and further explore its crystallization kinetics and thermodynamic mechanism. The results can be concluded as follows. The PX crystal shape is primarily regular elongated rectangles. Without the addition of seeds, the crystal number and size rapidly increase at the moment of nucleation, the final average particle size is around 425 μm. The solution supersaturation decreased rapidly in the initial stage of crystallization and stabilized after 20 min. As the stirring speed increases, the crystal aggregation decreases, the fragmentation degree increases, and the average particle size decreases monotonically. The crystal purity is highest at 400 rpm. The mechanism by which stirring speed affects the particle size distribution of PX crystals will vary with changes in the crystallization time. The fitted crystallization kinetic equations can accurately reflect the actual nucleation and growth rates. This work is expected to theorize, model, and parametrize the PX suspension crystallization process.

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Bio-based polyurethane reactive hot-melt adhesives derived from isosorbide-based polyester polyols with different carbon chain lengths

Cited by 18 publications

References 42 publications

Eco-Friendly Polyurethane Reactive Hot-Melt Adhesive Derived from Poly(ε-caprolactone-co-lactic acid) Diols

Eco-Friendly Polyurethane Reactive Hot-Melt Adhesive Derived from Poly(ε-caprolactone-co-lactic acid) Diols

Sustainable Multiblock Copolymer Elastomers Derived from Lignin with Tunable Performance toward Strong Adhesives and UV-Shielding Materials

Online In Situ Real-Time Experimental Investigation of the Crystallization Characteristics and Kinetic Models during the Nucleation and Growth Process of Para-Xylene Suspension Crystallization

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