Poly(lactic acid) fibers

Farrington, David

doi:10.1533/9781845690991.191

Cited by 99 publications

(54 citation statements)

References 15 publications

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“…Inadequate temperatures in these smaller piles, so that the key reaction for degradable/biodegradable plastics is not initiated, are thought to be the reason for much of the poor results (Farrington et al, 2005;Song et al, 2009). This has reignited controversies associated with earlier BP products, due to the mismatch between producer claims and consumer experiences (Tonjes and Greene, 2013).…”

Section: Discussionmentioning

confidence: 99%

Research of the biodegradability of degradable/biodegradable plastic material in various types of environments

Adamcová

Radziemska

Fronczyk

et al. 2017

Przegląd Naukowy Inżynieria I Kształtowanie Środowiska

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Research was carried out in order to assess biodegradability of degradable/biodegradable materials made of HDPE and mixed with totally degradable plastic additive (TDPA additive) or made of polyethylene (PE) with the addition of pro-oxidant additive (d2w additive), advertised as 100% degradable or certifi ed as compostable within various types of environments. Research conditions were: (i) controlled composting environment – laboratory-scale, (ii) real composting conditions – domestic compost bin, (iii) real composting conditions – industrial composting plant and (iv) landfill conditions. The results demonstrate that the materials made of HDPE and mixed with totally degradable plastic additive (TDPA additive) or made of polyethylene (PE) with the addition of pro-oxidant additive (d2w additive) or advertised as 100% degradable did not biodegrade in any of the above-described conditions and remained completely intact at the end of the tests. Biodegradation of the certified compostable plastic bags proceeded very well in laboratory-scale conditions and in real composting conditions – industrial composting plant, however, these materials did not biodegrade in real composting conditions – domestic compost bin and landfill conditions.

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Section: Discussionmentioning

confidence: 99%

Research of the biodegradability of degradable/biodegradable plastic material in various types of environments

Adamcová

Radziemska

Fronczyk

et al. 2017

Przegląd Naukowy Inżynieria I Kształtowanie Środowiska

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“…However, the latter may still be a suitable candidate for X-ray attenuator of scattered radiation which requires lower energy. These electrospun Bi 2 O 3 /PLA nanofibre mats can be used as a coating material for X-ray shielding because PLA nanofibres provide many benefits such as higher tenacity, resistance to degradation and mechanical properties (Farrington et al, 2005;Haroosh et al, 2012). Besides, since PLA has a higher tenacity, these electrospun Bi 2 O 3 /PLA nanofibre mats can be fabricated as gloves to be worn by radiation workers when holding radioactive materials or waste (non-clinical use), or used as a liner on examination tables to help attenuate scattered X-rays coming out from patients during medical diagnosis or therapy (using higher X-ray or γ-ray energies in the MeV range) performed by specialist radiographers and radiologists (clinical use).…”

Section: X-ray Attenuationsmentioning

confidence: 99%

Characteristics of X-Ray Attenuation in Electrospun Bismuth Oxide/Poly-lactic Acid Nanofibre Mats

Low¹,

Azman²

2020

Polymer Composites and Nanocomposites for X-Rays Shielding

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Keywords: Electrospun nano-Bi 2 O 3 /PLA nanofibre mat, electrospun micro-Bi 2 O 3 /PLA nanofibre mat, nano-Bi 2 O 3 /PLA thin films, micro-Bi 2 O 3 /PLA thin films, X-ray attenuation, porosity. SynopsisInvestigation of the x-ray attenuation by electrospun nano(n)-and micro(m)-Bi 2 O 3 /poly lactic acid (PLA) nanofibre mats with different Bi 2 O 3 loadings using mammography and XAS unit. AbstractThe characteristics of the X-ray attenuation in electrospun nano(n)-and micro(m)-Bi 2 O 3 /poly lactic acid (PLA) nanofibre mats with different Bi 2 O 3 loadings were compared as a function of energy using mammography (i.e. tube voltages of 22-49 kV) and X-ray absorption spectroscopy (XAS) (7-20 keV). Results indicate that X-ray attenuations by electrospun n-Bi 2 O 3 /PLA nanofibre mats are distinctly higher than those of m-Bi 2 O 3 /PLA nanofibre mats at all energies investigated. In addition, with increasing the filler loading (n-Bi 2 O 3 or m-Bi 2 O 3 ), the porosity of the nanofibre mats decreased thus increasing the X-ray attenuation except for the sample containing 38 wt.% of Bi 2 O 3 (the highest loading in the present study).The latter showed higher porosity with some beads formed, thus resulting in a sudden decrease in the X-ray attenuation. It. 2013. Characteristics of x-ray attenuation in electrospun bismuth oxide/polylactic acid nanofibre mats. Journal of Synchrotron Radiation. 20 (5): pp. 741-748.

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“…Although, PLA is biocompostable, with a low Tg (around 55°C) and low crystallisation rate. PLA becomes soft when the temperature approaches its Tg and its E-modulus cannot be backed up by crystallinity because PLA generally is amorphous after processing [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Comparative Investigation of Mechanical–Physical Characteristics of Biodegradable and Non-Degradable Yarns

Krikštanavičienė

Stanys

Jonaitienė

2014

Autex Research Journal

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This article presents the results from investigations of tensile tests, absorbency test and degradation test of biodegradable and non- or partly biodegradable yarns produced from pure poly hydroxybutyrate-co-valerate (PHBV), poly (lactide acid) (PLA), isotactic polypropylene (iPP) polymers and their blends. The results indicate that mechanical-physical properties of PHBV are improved by adding PLA and iPP to PHBV. The main results indicate that the PHBV/PLA and PHBV/iPP (70/30) blends had better mechanical properties than pure PHBV, as well as improved immiscibility and the same or lower degradation in sodium chloride solution, respectively. The PHBV/PLA and PHBV/iPP blends showed a tendency for lower crystallinity and stiffness of the yarns, rendering them less stiff and fragile. The absorption tests showed that absorption dynamic process depends on the structure and raw materials of the yarns. The disinfectant in all samples is absorbed faster than blood. Research results showed that pure PHBV yarns have good hydrophobic properties, compared with pure PLA and iPP yarns. The use of additional PLA and iPP polymers changed the wetting behaviour of yarns. Absorption time of blended yarns in disinfectant liquid decreases and absorption time in the case of blood significantly increases in comparison with PLA and iPP yarns and decreases compared with PHBV yarns. The degradation tests (within 90 days in a solution of sodium chloride) showed that pure PHBV and PHBV/PLA blends degraded at different rates but with the loss of the same weight, while pure PHBV and PHBV/iPP blends degraded at the same rate, but PHBV/iPP blends had worse destruction results. Such improvements are expected to be important for the practical application of PHBV in some fields

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Poly(lactic acid) fibers

Cited by 99 publications

References 15 publications

Research of the biodegradability of degradable/biodegradable plastic material in various types of environments

Research of the biodegradability of degradable/biodegradable plastic material in various types of environments

Characteristics of X-Ray Attenuation in Electrospun Bismuth Oxide/Poly-lactic Acid Nanofibre Mats

Comparative Investigation of Mechanical–Physical Characteristics of Biodegradable and Non-Degradable Yarns

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