A Study of Recycled Poly(butylene terephthalate) and Low-Density Polyethylene Blend

Pham, Nga Thi-Hong

doi:10.1134/s0965545x21060080

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…PBT is a thermoplastic that belongs to the polyester terephthalate family. PBT is also very popular due to its good mechanical properties and performance, good electrical insulation, water resistance [15,16], fast crystallization rate, and high heat distortion temperature [17]. PBT plastic is an engineering plastic with stable mechanical and chemical properties.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

The effect of carbon black percentage on mechanical properties and microstructure of polybutylene terephthalate/polyamide 6/carbon black blends

Pham,

Hua,

Ngo

et al. 2024

EEJET

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This study focuses on analyzing the influence of carbon black (CB) on Polybutylene terephthalate (PBT)/Polyamide 6 (PA6) blends. This study aims to solve the source of waste from toothbrush filament during production. This PBT/PA6 mixture does not meet the mechanical properties due to the incompatibility of these two plastics, which means this waste must be discarded and cannot be reused. When combined with CB, it creates a new type of plastic with more stable mechanical properties that can be applied in many areas of life and, at the same time, helps manufacturing businesses save on waste treatment costs. To create these PBT/PA6/CB blends, the research team used injection molding with a PBT/PA6 ratio of 75/25 combined with 0, 4, 8, and 12 % carbon black. The tensile and impact strength were tested according to the ASTM D638 and ASTM D256 standards. The results found that when adding 4 % CB to the PBT/PA6 plastic mixture, the tensile strength decreased from 34.9 to 34.8 MPa. Meanwhile, the tensile strength is improved when adding 8 % CB (35.3 MPa). At 12 % CB, a difference in tensile strength results, decreasing to 29.7 MPa. This result shows that the ratio 75/25 can give the best tensile strength value of the PBT/PA6 mixture with 8 wt. % CB. The impact strength was 3.5, 2.9, and 2.7 kJ/m2 according to 4, 8, and 12 % CB samples. Mechanical quality tests have shown that the tensile strength is improved when combining CB into the PBT/PA6 mixture, but the impact strength is reduced. SEM results show that most CB interacts with PBT/PA6 mainly because the PA6 particles are spherical and tend to separate easily from the mixture. The research found that increasing CB density worsens the bonding ability between PBT and PA6. These results help us provide experience for the most appropriate application for each purpose

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

The effect of carbon black percentage on mechanical properties and microstructure of polybutylene terephthalate/polyamide 6/carbon black blends

Pham,

Hua,

Ngo

et al. 2024

EEJET

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“…It and POE are both polyolefins, and they are somewhat compatible with one another. Its toughness, tearing strength, flow performance, and creep resistance are outstanding, and it is widely used in the toughening modification of the PBT resin. − The melt grafting of POE and LLDPE can produce a toughening agent that shares the best properties of POE and LLDPE, that is, outstanding strength, toughness, and processing fluidity, which can further expand the application of the PBT resin in various fields.…”

Section: Introductionmentioning

confidence: 99%

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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“…Low-Density Polyethylene (LDPE) is made from the monomer Ethylene [3]. LDPE's practical uses in manufacturing are in containers, bottles, tubes, plastic computer parts, and foundry laboratory equipment.…”

Section: Introductionmentioning

confidence: 99%

Morphological and Tensile Strength of Low-Density Polyethylene/Polyethylene Terephthalate Blends

Lanh,

Thuan,

Nga

2023

Advances in Transdisciplinary Engineering

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Low – Density Polyethylene (LDPE) is a thermoplastic made from ethylene monomer, with slightly soft properties, high strength and good impact resistance. This study aimed to improve the mechanical properties of LDPE by mixing it with Polyethylene Terephthalate (PET). This study tested the mixing of LDPE with PET in the respective ratios of 100/0, 95/5, 90/10, 85/15 and 80/20, and then used injection molding to create the mixture. The samples were measured for tensile strength according to ASTM D638. Tensile strength measurements using PET concentrations of 0%, 5%, 10%, 15%, and 20%, respectively, demonstrate that the tensile strength is 12.89, 12.65, 10.97, 12.07, and 13.4 MPa. In addition, in this experiment we used an optical microscope to study microstructure, the results showed spherical PET particles interwoven into the LDPE substrate, but no interphase adhesion was observed. According to the results, LDPE/PET composites will have a variety of uses in the future. Overall, the tensile strength of LDPE/PET composites allows for different applications

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A Study of Recycled Poly(butylene terephthalate) and Low-Density Polyethylene Blend

Cited by 7 publications

References 25 publications

The effect of carbon black percentage on mechanical properties and microstructure of polybutylene terephthalate/polyamide 6/carbon black blends

The effect of carbon black percentage on mechanical properties and microstructure of polybutylene terephthalate/polyamide 6/carbon black blends

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

Morphological and Tensile Strength of Low-Density Polyethylene/Polyethylene Terephthalate Blends

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