Techno-economic-environmental characteristics of polyurethane composite to thermal insulation for building with flame resistance: corroborative effect recycled of PVC and aluminum oxide

Hipolito, Victor Leibnitz; Amorim, Vanessa Amorim; Gleize, Philippe Jean Paul; Girotto, Edivandro; Júnior, Américo Cruz; Benavides, R.; Sanchez, Saúl; Silva, Luciano da; Magnago, Rachel Faverzani

doi:10.1007/s10163-021-01326-0

Cited by 4 publications

(4 citation statements)

References 38 publications

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“…In the FTIR spectrum of the mannich reaction adduct, the peaks representing aldehyde groups (1725 cm -1 ) disappeared and the peaks representing P=O, C-N and P-O (1439, 1027 and 950 cm -1 ) appeared after the reaction of MA, diethyl phosphite and diethylenetriamine, suggesting successful preparation of MAM. A deep insight into the chemical structures of MA and MAM was further obtained by 1 MAM was covalently bonded to PVC via nucleophilic replacing the unstable chlorine atoms of PVC chains. The functional groups of the as-prepared samples were investigated by FT-IR spectroscopy.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

“…Poly(vinyl chloride) (PVC) has been widely applied in various fields; however, it degrades easily at processing temperatures due to autocatalytic dehydrochlorination (DHC) [1,2]. This degradation occurs because of the elimination of HCl and the production of conjugated unsaturated double bonds [3], which remarkably decreases the color, thermal and mechanical properties [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…CaSt 2 /ZnSt 2 (calcium stearate/zinc stearate) composite heat stabilizers have been extensively investigated attributing to their synergistic effect in stabilizing PVC. However, zinc chloride (ZnCl 2 ) with strong Lewis acidity is formed in the manufacturing process of PVC materials thermally stabilized by CaSt 2 /ZnSt 2 , causing an unfavorable "zinc burning" phenomenon [1,10]. Organic thermal stabilizers show great potential attributing to their advantages including high efficiency, low environmental impact, good compatibility, and strong universality.…”

Section: Introductionmentioning

confidence: 99%

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The Promoting Effect of Multifunctional Groups on the Thermal and Mechanical Properties of PVC Materials

Wang¹,

Fan²,

Song³

et al. 2023

Journal of Renewable Materials

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The development of PVC materials grafted with mannich base originated from myrcene (P-MAM-g, where the mannich base derived from myrcene is abbreviated as MAM) via green and effective synthetic methods is a good strategy to avoid unacceptable discoloration and deterioration of thermal and mechanical properties caused by autocatalytic dehydrochlorination (DHC) during PVC processing. In this study, MAM with double bonds, amino groups, ester groups, and phospholipid groups was introduced into the chains of PVC to improve the thermal stability of PVC. The experimental results showed that the covalent attachment of MAM to PVC enhanced both the initial and the long-term stability of PVC. The enhanced performance of P-MAM-g compared with unmodified PVC is attributed to the simultaneous introduction of double bonds and amino groups into the PVC structure. The double bonds trapped the unstable chlorine atoms originated from the degradation of the PVC chain and reacted with the labile macromolecular radicals originated from PVC, thus inhibiting the radical degradation of the PVC chain. Furthermore, the amino groups absorbed the HCl produced in the degradation of PVC, inhibiting the adverse effects of HCl. P-MAM-g displayed better intrinsic flexibility and anti-migration ability of organic functional components compared with the control PVC materials. A possible stabilizing mechanism of the P-MAM-g was also presented.

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Section: Synthesis and Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Promoting Effect of Multifunctional Groups on the Thermal and Mechanical Properties of PVC Materials

Wang¹,

Fan²,

Song³

et al. 2023

Journal of Renewable Materials

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show abstract

“…The density values increased as PVC was added to the blend since TPU is a less dense polymer when compared to PVC [20,26,40]. Also, the lower density of the TPU is due to its heterogeneous polymeric chain, with rigid and non-rigid parts that are not easily accommodated in a compact structure, unlike PVC, which, with its linear chains, is more e ciently compacted when going through the extrusion process.…”

Section: Densitymentioning

confidence: 99%

From recycled PVC and its blends to eco-friendly materials for the footwear industry in Brazil: Insight into the process and evaluation of the mechanical properties

Marsura,

Bahú,

Tovar

et al. 2023

Preprint

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Recycling and upcycling waste polyvinyl chloride (PVC) poses a major challenge to the footwear industry due to its short lifecycle and the environmental impact of destructive trends. This study aimed to recycle thermoplastic polyvinyl chloride (rPVC) from used sports shoes of the most varied kind, obtained from a recycling company. The rPVC and thermoplastic polyurethane (TPU) were melt-blended, prepared by industrial injection molding with different compositions, and the polymer blends were characterized by morphological, thermal, and mechanical means. The overall properties of the recycled polymer blends were improved compared to their parent commercial materials. When TPU and rPVC were blended, the resulting material displayed a remarkable hardness. The abrasion resistance of the TPU/rPVC polymer blends (67/33 and 50/50 wt.%) was enhanced twice compared to PVC, and the rPVC rupture strength (14.73 MPa) was 1.6 times greater than virgin PVC (9.11 MPa). Likewise, The TPU/rPVC blend (50/50% wt.%) also offered significantly greater deformation resistance, indicating that rPVC has a more entangled structure with greater resistance and, thus, greater tensile strength. Polymer blending is accelerating research and development in the footwear industry, and the outcomes have qualified the TPU/rPVC (67/33 and 50/50 wt.%) polymer blends to meet the growing consumer demand for environmentally friendly footwear.

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Recycled brick red-based boards for thermal insulation: filler to polyurethane composite

Magnago,

Baungarten,

Mendonça

et al. 2023

J Mater Cycles Waste Manag

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Techno-economic-environmental characteristics of polyurethane composite to thermal insulation for building with flame resistance: corroborative effect recycled of PVC and aluminum oxide

Cited by 4 publications

References 38 publications

The Promoting Effect of Multifunctional Groups on the Thermal and Mechanical Properties of PVC Materials

The Promoting Effect of Multifunctional Groups on the Thermal and Mechanical Properties of PVC Materials

From recycled PVC and its blends to eco-friendly materials for the footwear industry in Brazil: Insight into the process and evaluation of the mechanical properties

Recycled brick red-based boards for thermal insulation: filler to polyurethane composite

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