Effect of Polybutylene Succinate Additive in Polylactic Acid Blend Fibers via a Melt-Blown Process (original) (raw)
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Oriental Journal of Chemistry
Compounding of polylactides (PLA) and polybutylene succinate (PBS) was performed with the aim of modifying the processablility of PLA based materials. The influence of PBS on the thermal, mechanical, and rheological properties of PLA/PBS blends was analyzed and the results of the testing were used to indicate the compatibility of the blend. A decrease of the melting temperature and an improvement of the mechanical properties of PLA were achieved by compounding it with PBS. Increasing addition of PBS was found to decrease the tensile strength and Young's modulus of the PLA/PBS blends, but its % elongation at break was increased. However, a higher level of PBS addition initiated a phase separation problem. The interaction parameters were calculated from the Flory-Huggins equation for prediction of thermal property of the blends and the maximum blending ratio of 80:20 (PLA:PBS) was thermodynamically acceptable immiscible level. Relatively low levels of PBS addition improved the melt flow characteristics of the blend. The effect of the PBS addition level on the compatibility of the blend can definitely identify from the modified Cole-Cole plot of rheological properties.
Open Journal of Polymer Chemistry, 2019
We studied the electrospinning process of the blend of polylactic acid (PLA) and polybutylene succinate (PBS). The blend PLA/PBS ratio 95/5, 90/10, 85/15 and 80/20 wt% were prepared by dissolved in mixture of solvent between dichloromethane (DCM) and N, N-dimethylformamide (DMF) at ratio 3/1. The suitable condition for electrospun of the blend was 17% wt concentration, 16 kV and 18 cm projection distance. The round fiber with pore on the surface was observed. Increasing content of PBS in the blend impact to the diameter of fibril decreased from 1350, 1290, 1210 and 1170 nm, respectively; while the pore on the surface changes from circle to oval shape. Regarding the thermal properties, blending of PBS increases the glass transition temperature (T g) of PLA without affect to the melting temperature (T m) of the electrospun nanofibers. The best tensile properties of PLA/PBS nanofibers were achieved at blend ratio of 95/5, and Young's modulus is increased comparing to those of the pure electrospun fibers.
Poly(Lactic Acid) and Poly(Butylene Succinate) Blend Fibers Prepared by Melt Spinning Technique
Energy Procedia, 2013
Poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) were blended in a twin screw extruder at various contents of PBS from 0-50 wt%. PLA/PBS blends were melt spun using a single screw extruder equipped with multifilaments spinnerette. The effect of PBS contents on morphology, thermal and mechanical properties of PLA/PBS blend fiber was investigated SEM micrographs indicated that the addition of PBS at 10 wt% was miscible with PLA while the other contents of PBS exhibited phase separation in the blends. The incorporation of PBS affected on the declination of crystallinity in the blends. It can be noted that the addition of PBS could enhance the elasticity of PLA/PBS blend fibers.
Biodegradable fibers from poly (lactic acid)/poly (butylene succinate) blends
IOP Conference Series: Materials Science and Engineering
PLA and PBS have more attention from many industries including textiles industry because there are biopolymer, which have eco-friendly. This research aims at fabricating biodegradable fibers from poly (lactic acid) (PLA) blended with poly (butylene succinate) (PBS). PLA and PBS were blended in a twin-screw extruder at various PBS contents 0 to 20 wt%. The blended fibers were then prepared by the melt spinning using a multifilament spinneret. The mechanical, thermal, and morphological properties were characterized by tensile testing, differential scanning calorimetry, and scanning electron microscopy. The results indicate that, at PBS content in PLA of 10 wt%, the obtained fiber has the optimal tensile properties. At this ratio, the blends also possesses the highest crystallinity among the blended fibers. Although these two biodegradable polymers are immiscible, but at the optimal ratio the PBS phase is well-dispersed in the PLA matrix phase.
A Review on Green Composites Based on Natural Fiber-Reinforced Polybutylene Succinate (PBS)
Polymers
The need for utilization of environmentally friendly materials has emerged due to environmental pollution that is caused by non-biodegradable materials. The usage of non-biodegradable plastics has increased in the past decades in many industries, and, as a result, the generation of non-biodegradable plastic wastes has also increased. To solve the problem of non-biodegradable plastic wastes, there is need for fabrication of bio-based polymers to replace petroleum-based polymers and provide strategic plans to reduce the production cost of bioplastics. One of the emerging bioplastics in the market is poly (butylene succinate) (PBS) and it has been the biopolymer of choice due to its biodegradability and environmental friendliness. However, there are some disadvantages associated with PBS such as high cost, low gas barrier properties, and softness. To lower the cost of PBS and enhance its properties, natural lignocellulosic fibers are incorporated into the PBS matrix, to form environmen...
An insight on the process-property relationships of melt spun polylactic acid fibers
Polylactic acid (PLA) fibers are receiving growing interest as one of the recent innovative materials being developed for various applications. The inherent biodegradability of PLA makes it highly attractive for the biomedical and health care sectors. PLA fibers need to be partially and/or highly oriented to allow high performance and readiness for a wide range of manufacturability. In this study, the structure and properties of PLA fibers, manufactured at different spinning speeds, were studied. Laser diffractometry, polarized light microscopy, differential scanning calorimetry (DSC) and X-ray dif-fraction (XRD) were used to determine the diameter, birefringence, molecular orientation, enthalpy and degree of crystallinity of as-spun and drawn PLA fibers. The results of DSC and XRD showed that the degree of crystallinity of the PLA fibers is significantly improved for the drawn PLA fibers compared to the as-spun fibers and leveled off in the case of changing the take-up speeds of drawn fibers.
PLA composites: From production to properties
Advanced Drug Delivery Reviews, 2016
Poly(lactic acid) or polylactide (PLA), a biodegradable polyester produced from renewable resources, is used for various applications (biomedical, packaging, textile fibers and technical items). Due to its inherent properties, PLA has a key-position in the market of biopolymers, being one of the most promising candidates for further developments. Unfortunately, PLA suffers from some shortcomings, whereas for the different applications specific end-use properties are required. Therefore, the addition of reinforcing fibers, micro-and/or nanofillers, and selected additives within PLA matrix is considered as a powerful method for obtaining specific end-use characteristics and major improvements of properties. This review highlights recent developments, current results and trends in the field of composites based on PLA. It presents the main advances in PLA properties and reports selected results in relation to the preparation and characterization of the most representative PLA composites. To illustrate the possibility to design the properties of composites, a section is devoted to the production and characterization of innovative PLA-based products filled with thermally-treated calcium sulfate, a by-product from the lactic acid production process. Moreover, are emphasized the last tendencies strongly evidenced in the case of PLA, i.e., the high interest to diversify its uses by moving from biomedical and packaging (biodegradation properties, "disposables") to technical applications ("durables").
An insight into enhancing the physical properties of poly(lactic acid) (D600) fibers
The most applicable polymer in different applications is poly(lactic acid) (PLA) due its merits. This polymer attracts great interest as an environmentally friendly bioplastic polymer. The main goal of this work is to enhance the different physical properties of PLA. The melt-spun process was used to produce a continuous multifilament yarns of PLA textile fibers. The mechanical properties (tensile properties) of PLA(D600) filaments were studied. The tensile modulus and the maximum tensile strength were 3 and 0.4 GPa, respectively. The effect of the cold-drawing process on some physical properties, such as the melting temperature, glass transition temperature, crystallinity, birefringence, and orientation factor, were measured. The crystallinity values changed as the draw ratio increased, confirming the reorientations and chain packing. From the obtained results of the different physical properties, it was concluded that the drawing process has a great effect on performance of PLA fibers.
Polymers, 2022
Polylactic acid (PLA) is a thermoplastic polymer produced from lactic acid that has been chiefly utilized in biodegradable material and as a composite matrix material. PLA is a prominent biomaterial that is widely used to replace traditional petrochemical-based polymers in various applications owing environmental concerns. Green composites have gained greater attention as ecological consciousness has grown since they have the potential to be more appealing than conventional petroleum-based composites, which are toxic and nonbiodegradable. PLA-based composites with natural fiber have been extensively utilized in a variety of applications, from packaging to medicine, due to their biodegradable, recyclable, high mechanical strength, low toxicity, good barrier properties, friendly processing, and excellent characteristics. A summary of natural fibers, green composites, and PLA, along with their respective properties, classification, functionality, and different processing methods, are d...