The influences of elastomer toward degradability of poly (lactic acid)

Kaavessina, Mujtahid; Distantina, Sperisa; Chafidz, Achmad; Fadilah, Fadilah; Al‐Zahrani, Saeed M.

doi:10.1063/1.4941497

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…[ 72 ]. XRD examines the surface of the sample, while in DSC, the measurement involves the whole volume of sample [ 73 ], and the samples from the injection were tested. It should also be noted that the theoretical enthalpy of fusion estimated by Fischer based on Flory’s theory for polymers and copolymers is quite inaccurate when dealing with trans-crystallization in heterogeneous nucleation [ 57 , 59 ].…”

Section: Resultsmentioning

confidence: 99%

OH End-Capped Silicone as an Effective Nucleating Agent for Polylactide—A Robotizing Method for Evaluating the Mechanical Characteristics of PLA/Silicone Blends

Przekop,

Sztorch,

Głowacka

et al. 2024

Polymers

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Current research on materials engineering focuses mainly on bio-based materials. One of the most frequently studied materials in this group is polylactide (PLA), which is a polymer derived from starch. PLA does not have a negative impact on the natural environment and additionally, it possesses properties comparable to those of industrial polymers. The aim of the work was to investigate the potential of organosilicon compounds as modifiers of the mechanical and rheological properties of PLA, as well as to develop a new method for conducting mechanical property tests through innovative high-throughput technologies. Precise dosing methods were utilized to create PLA/silicone polymer blends with varying mass contents, allowing for continuous characterization of the produced blends. To automate bending tests and achieve comprehensive characterization of the blends, a self-created workstation setup has been used. The tensile properties of selected blend compositions were tested, and their ability to withstand dynamic loads was studied. The blends were characterized through various methods, including rheological (MFI), X-ray (XRD), spectroscopic (FTIR), and thermal properties analysis (TG, DSC, HDT), and they were evaluated using microscopic methods (MO, SEM) to examine their structures.

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Section: Resultsmentioning

confidence: 99%

OH End-Capped Silicone as an Effective Nucleating Agent for Polylactide—A Robotizing Method for Evaluating the Mechanical Characteristics of PLA/Silicone Blends

Przekop,

Sztorch,

Głowacka

et al. 2024

Polymers

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“…In our previous work, the degradation rate of poly(lactic acid) or PLA was affected by other polymers or substances in blends or its molecular weight [ 19 , 20 ]. Based on the results, we studied the possibility of developing fertilizer by utilizing low molecular weight PLA as a substitute for the existing matrices of SRF.…”

Section: Introductionmentioning

confidence: 99%

A Slow-Release Fertilizer of Urea Prepared via Melt Blending with Degradable Poly(lactic acid): Formulation and Release Mechanisms

2021

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In this research, a low molecular weight poly(lactic acid) (or PLA) synthesized from direct polycondensation was melt compounded with urea to formulate slow-release fertilizer (SRF). We studied the influence of the molecular weight (MW) of PLA as a matrix and the urea composition of SRF towards release kinetics in water at 30 °C. The physical appearance of solid samples, the change in urea concentration, and acidity (pH) of water were monitored periodically during the release test. Three studied empirical models exhibited that diffusion within the matrix dominated the urea release process, especially when the release level was less than 60%. Thus, a lower MW of PLA and a higher urea content of SRF showed a faster release rate. For the entire length of the release experiment, a combination of diffusion and degradation mechanisms exhibited the best agreement with the experimental data. The hydrolytic degradation of PLA may begin after 96 h of immersion (around 60% release level), followed by the appearance of some micro-holes and cracks on the surface of the SRF samples. Generally, this research revealed the good release performance of urea without residues that damage the soil structure and nutrient balance.

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The effects of molecular weight of poly lactic acid matrix on release time of smart urea fertilizer (SUF)

Kaavessina

Chafidz

Mu'awanah

et al. 2019

AIP Conference Proceedings

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The influences of elastomer toward degradability of poly (lactic acid)

Cited by 3 publications

References 14 publications

OH End-Capped Silicone as an Effective Nucleating Agent for Polylactide—A Robotizing Method for Evaluating the Mechanical Characteristics of PLA/Silicone Blends

OH End-Capped Silicone as an Effective Nucleating Agent for Polylactide—A Robotizing Method for Evaluating the Mechanical Characteristics of PLA/Silicone Blends

A Slow-Release Fertilizer of Urea Prepared via Melt Blending with Degradable Poly(lactic acid): Formulation and Release Mechanisms

The effects of molecular weight of poly lactic acid matrix on release time of smart urea fertilizer (SUF)

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