Polymer blends of polyamide-6/Spandex fabric scraps and recycled poly(ethylene terephthalate)

Albitres, Gerson Alberto Valencia; Mendes, Luís Claudio; Cestari, Sibele Piedade

doi:10.1007/s10973-017-6298-0

Cited by 11 publications

(7 citation statements)

References 40 publications

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“…Once they reached the optimum design, they used TGA to verify the resistance to the thermal degradation, by measuring T i and T g by DMA. This latter technique showed two intermediate glass transition temperatures, resulting in blends with at least two phases confirming the miscibility [ 35 ].…”

Section: Thermal Techniques In Polymers’ Recycling and Preparationmentioning

confidence: 96%

The Use of Thermal Techniques in the Characterization of Bio-Sourced Polymers

Blanco

Siracusa

2021

Materials

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The public pressure about the problems derived from the environmental issues increasingly pushes the research areas, of both industrial and academic sectors, to design material architectures with more and more foundations and reinforcements derived from renewable sources. In these efforts, researchers make extensive and profound use of thermal analysis. Among the different techniques available, thermal analysis offers, in addition to high accuracy in the measurement, smartness of execution, allowing to obtain with a very limited quantity of material precious information regarding the property–structure correlation, essential not only in the production process, but overall, in the design one. Thus, techniques such as differential scanning calorimetry (DSC), differential thermal analysis (DTA), dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) were, are, and will be used in this transition from fossil feedstock to renewable ones, and in the development on new manufacturing processes such as those of additive manufacturing (AM). In this review, we report the state of the art of the last two years, as regards the use of thermal techniques in biopolymer design, polymer recycling, and the preparation of recyclable polymers as well as potential tools for biopolymer design in AM. For each study, we highlight how the most known thermal parameters, namely glass transition temperature (Tg), melting temperature (Tf), crystallization temperature (Tc) and percentage (%c), initial decomposition temperature (Ti), temperature at maximum mass loss rate (Tm), and tan δ, helped the researchers in understanding the characteristics of the investigated materials and the right way to the best design and preparation.

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Section: Thermal Techniques In Polymers’ Recycling and Preparationmentioning

confidence: 96%

The Use of Thermal Techniques in the Characterization of Bio-Sourced Polymers

Blanco

Siracusa

2021

Materials

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“…Owing to the previous reasoning, the main goal of our research group is to scientifically achieve new polymeric materials—conductive composite, synthetic paper, bricks, plastic lumber, textile fiber, among others—made of recycled polymers. 13–23 This study is a deployment of our last work, where we started to develop composites of recycled high-density polyethylene and microfibers of sugarcane bagasse, in order to create a material to produce masonry bricks. 24 In this article, we assessed advanced properties—scientific and industry-oriented—of these composites, aiming to broaden and spread the knowledge about this material, and improving the chances of transforming a scientific development in an actual sustainable solution.…”

Section: Introductionmentioning

confidence: 99%

Advanced properties of composites of recycled high-density polyethylene and microfibers of sugarcane bagasse

Cestari

Albitres

Mendes

et al. 2017

Journal of Composite Materials

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Aiming to systematically convert post-consumer plastics in building materials, we compounded recycled high-density polyethylene and sugarcane bagasse. We ranged the polymer/filler ratio from 100/0 to 60/40, and assessed the properties using optical microscopy, water absorption test, adhesion by tape test, low-field nuclear magnetic resonance, dynamic-mechanical analysis, and wide-angle X-ray diffractometry. The optical microscopy of the triturated bagasse showed the reduced and heterogeneous fiber sizes. The absorption and adhesion test showed that the polymer more heavily filled with bagasse can better absorb and anchor paint with organic solvent base. The dynamic-mechanical analysis and wide-angle X-ray diffractometry led us to believe that the bagasse fibers somehow structured the amorphous region amongst the crystallized lamellae of the polymeric matrix. We concluded that these composites have interesting properties to produce building materials.

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“…The thermal parameters of the samples are listed in Table . As can be seen from Figure a, all samples showed a two-step degradation mechanism with an obvious second gradient phenomenon. ,− The first step was caused by the decarboxylation of the ester group and chain segment of the polymer matrix and the second by the degradation of aromatic components in the system. All curves had a reverse change rule at the end of the curve.…”

Section: Resultsmentioning

confidence: 97%

Functionalized Poly(ethylene-octene)/Linear Low-Density Polyethylene Prepared by Melt Free-radical Grafting Reaction and Its Potential in Toughening Poly(butylene terephthalate) Resins

Song

Yang

Xiao-ning

et al. 2023

Ind. Eng. Chem. Res.

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Glycidyl methacrylate (GMA) and styrene (St) were used as the graft monomer and co-graft monomer, respectively, and grafted onto poly(ethylene-octene) (POE) and linear low-density polyethylene (LLDPE) to prepare a series of GMA-functionalized (POE/LLDPE)-g-(GMA-co-St) graft copolymers. The copolymers were then blended with poly(butylene terephthalate) (PBT) to produce PBT/(POE/LLDPE)-g-(GMA-co-St) blends. The effects of grafting factors and copolymer content on the mechanical properties, thermal properties, rheology, morphology, and deformation mechanism of the blends were studied in detail. The results showed that GMA and St were successfully grafted onto the molecular chains of POE and LLDPE. In the grafting reaction, the best grafting degree and comprehensive performance were achieved when the amounts of dicumyl peroxide and GMA were 0.3 and 5 wt %, respectively, the mass ratio of GMA to St was 1:2, and the screw rotation speed was 60 rpm. By introducing graft copolymers into the PBT matrix, the toughness and thermal stability of the blends were improved. At the same time, the crystallinity and fluidity decreased, and the blends possessed the best mechanical properties when the copolymer content was 20 wt %, with the elongation at break and notched impact strength increasing to 409.98% and 945.90 J/m, respectively. Scanning electron microscopy analysis showed that the copolymers were uniformly dispersed in the PBT matrix. The principal toughening mechanisms were the shear-yielding properties of the PBT matrix and cavitation of (POE/LLDPE)-g-(GMA-co-St) phases.

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Polymer blends of polyamide-6/Spandex fabric scraps and recycled poly(ethylene terephthalate)

Cited by 11 publications

References 40 publications

The Use of Thermal Techniques in the Characterization of Bio-Sourced Polymers

The Use of Thermal Techniques in the Characterization of Bio-Sourced Polymers

Advanced properties of composites of recycled high-density polyethylene and microfibers of sugarcane bagasse

Functionalized Poly(ethylene-octene)/Linear Low-Density Polyethylene Prepared by Melt Free-radical Grafting Reaction and Its Potential in Toughening Poly(butylene terephthalate) Resins

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