Poly (Lactic Acid) Biopolymer Composites and Nanocomposites for Biomedicals and Biopackaging Applications

Agwuncha, Stephen C.; Sadiku, Rotimi; Ibrahim, Idowu David; Aderibigbe, B. A.; Owonubi, Shesan John; Agboola, Oluranti; Reddy, A. Babul; Manjula, B.; Varaprasad, Kokkarachedu; Bayode, Bamidele Lawrence; Ray, Suprakas Sinha

doi:10.1002/9781119441632.ch153

Cited by 6 publications

(1 citation statement)

References 209 publications

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“…If the neat nanocomposites based on PLA support [166,167] are considered as the backgrounds for bioplastics, the radiation procedure applied on the hybridized polymers brings about a redesign of the development strategy and approaching manner for a successful evolution of material performances. By the limitation of technological sight with the low cost equipments, the radiation processing of biopolymers still receives reduced attention.…”

Section: Poly(lactic Acid)mentioning

confidence: 99%

Irradiation Effects in Polymer Composites for Their Conversion into Hybrids

Zaharescu

Mariș

2022

J. Compos. Sci.

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In this paper several aspects of profound modifications caused by high energy exposures are presented as possible candidates for the efficient adjusting processing of polymer materials. The class of hybrid composites receives special attention due to the large spectrum of formulations, where the interphase interaction decisively influences the material properties. They represent potential start points for the intimate uniformity of hybrid morphologies. Their radiation processing turns composites onto hybrid morphology with expected features, because the transferred energy is spent for the modification of components and for their compatibility. The essential changes achieved in radiation processed composites explain the new material behavior and durability based on the peculiar restructuring of polymer molecules that occurred in the polymer phase. During high energy irradiation, the interaction between intermediates born in the constitutive phases may convert the primary composites into hybrids, integrating them into large applicability spheres. During the radiation exposure, the resulting hybrids gain a continuous dispersion by means of new chemical bonds. This type of compounds achieves some specific structural modifications in the polymer phase, becoming stable hybrid composites. The functional properties of hybrids definitely influence the material behavior due to the molecular changes based on the structural reasons. The radiolysis of the vulnerable component becomes an appropriate opportunity for the creation of new material with improved stability. The radiation treatment is a proper conversion procedure by which common mixtures may become continuously reorganized. This review presents several examples for the radiation modifications induced by radiation exposure that allow the compatibilization and binding of components as well as the creation of new structures with improved properties. This approach provides the reference patterns for the extension of radiation processing over the well-conducted adjustments of polymer composites, when certain material features are compulsorily required. From this review, several solutions for the adjustment of regular polymer composites into hybrid systems may become conceivable by the extended radiation processing.

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Section: Poly(lactic Acid)mentioning

confidence: 99%

Irradiation Effects in Polymer Composites for Their Conversion into Hybrids

Zaharescu

Mariș

2022

J. Compos. Sci.

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Composites

Gupta¹,

Kumawat²,

Ghosh³

et al. 2022

Poly(Lactic Acid)

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Synthesis, Structures, and Catalytic Activity of Homo‐ and Heteroleptic Ketoiminate Zinc Complexes in Lactide Polymerization

et al. 2018

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The heteroleptic complex LZnEt [(1); L = MeNacac = MeNC(Me)CHC(Me)O] containing the sterically less demanding N,O-chelating ketoiminate (MeNacac) ligand was synthesized by reaction of ZnEt 2 with an equimolar amount of MeNacacH, whereas the reaction with two equivalents MeNacacH gave the homoleptic complex L 2 Zn 5. 1 reacts with ArOH (Ar = 2,6-Me 2 -Ph) with ethane elimination and formation of LZnOAr (2). Addition of the Lewis base dmap (dmap = 4-dimethylamino pyridine) to 1 and 2 yielded the corresponding Lewis acid-base adducts dmap-Zn(L)Et 3 and dmap-Zn(L)OAr 4. Compounds 1-5 were characterized by heteronuclear NMR ( 1 H, 13 C) and IR spectroscopy, elemental analysis, and single-crystal X-ray dif-[a] Synthesis and Characterization The reaction of ketoimine LH [L = MeNacac = MeNC(Me)-CHC(Me)O] with an equimolar amount of diethylzinc in THF at -60°C occurred with elimination of ethane and formation of Scheme 1. Synthesis of 1-5.

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Poly (Lactic Acid) Biopolymer Composites and Nanocomposites for Biomedicals and Biopackaging Applications

Cited by 6 publications

References 209 publications

Irradiation Effects in Polymer Composites for Their Conversion into Hybrids

Irradiation Effects in Polymer Composites for Their Conversion into Hybrids

Composites

Synthesis, Structures, and Catalytic Activity of Homo‐ and Heteroleptic Ketoiminate Zinc Complexes in Lactide Polymerization

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