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Investigation of Material-Process-St...

Su, To Yu Troy.

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Investigation of Material-Process-Structure-Property Relationships for Lignocellulosic Nanofibril Reinforced Polylactic Acid Composites.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Investigation of Material-Process-Structure-Property Relationships for Lignocellulosic Nanofibril Reinforced Polylactic Acid Composites./
作者:	Su, To Yu Troy.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
面頁冊數:	168 p.
附註:	Source: Masters Abstracts International, Volume: 85-05.
Contained By:	Masters Abstracts International85-05.
標題:	Mechanical engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30573055
ISBN:	9798380833608

Investigation of Material-Process-Structure-Property Relationships for Lignocellulosic Nanofibril Reinforced Polylactic Acid Composites.
Su, To Yu Troy.

Investigation of Material-Process-Structure-Property Relationships for Lignocellulosic Nanofibril Reinforced Polylactic Acid Composites. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 168 p.

Source: Masters Abstracts International, Volume: 85-05.

Thesis (M.A.S.)--University of Toronto (Canada), 2023.

This study explores polylactic acid (PLA)-based composites reinforced with lignocellulosic nanofibrils (LCNF) processed by spray drying (SD), freeze drying (FD), solvent exchange (SE), and solution transfer (ST) via polyethylene glycol (PEG). The LCNF ranged from near-spherical in the SD LCNF to fibrillar in SE LCNF. SE and FD LCNF agglomerated significantly which inhibits their ability to improve crystallization kinetics and tensile properties. SD LCNF, by its dispersed nature, facilitates high nucleation density, leading to crystallization-induced tensile enhancement. ST LCNF self-assembled into core-shell structures with PEG localizing at the LCNF/PLA interface, reducing agglomeration, yielding significant rheological modification, and greatly enhancing toughness. LCNFs processed by these methods impart differing morphologies that give rise to varying degrees of dispersion and agglomeration, which impacts downstream structures that form after processing and give rise to observed properties. Such material-process-structure-property relationships are foundational in the intelligent design of novel bio-based and biodegradable packaging materials.

ISBN: 9798380833608Subjects--Topical Terms:

649730
Mechanical engineering.
Subjects--Index Terms:

Biodegradable packaging materials

Investigation of Material-Process-Structure-Property Relationships for Lignocellulosic Nanofibril Reinforced Polylactic Acid Composites.
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300 $a 168 p.
500 $a Source: Masters Abstracts International, Volume: 85-05.
500 $a Advisor: Lee, Patrick;Yan, Ning.
502 $a Thesis (M.A.S.)--University of Toronto (Canada), 2023.
520 $a This study explores polylactic acid (PLA)-based composites reinforced with lignocellulosic nanofibrils (LCNF) processed by spray drying (SD), freeze drying (FD), solvent exchange (SE), and solution transfer (ST) via polyethylene glycol (PEG). The LCNF ranged from near-spherical in the SD LCNF to fibrillar in SE LCNF. SE and FD LCNF agglomerated significantly which inhibits their ability to improve crystallization kinetics and tensile properties. SD LCNF, by its dispersed nature, facilitates high nucleation density, leading to crystallization-induced tensile enhancement. ST LCNF self-assembled into core-shell structures with PEG localizing at the LCNF/PLA interface, reducing agglomeration, yielding significant rheological modification, and greatly enhancing toughness. LCNFs processed by these methods impart differing morphologies that give rise to varying degrees of dispersion and agglomeration, which impacts downstream structures that form after processing and give rise to observed properties. Such material-process-structure-property relationships are foundational in the intelligent design of novel bio-based and biodegradable packaging materials.
590 $a School code: 0779.
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650 4 $a Polymer chemistry. $3 3173488
650 4 $a Materials science. $3 543314
650 4 $a Nanoscience. $3 587832
653 $a Biodegradable packaging materials
653 $a Biopolymers
653 $a Cellulose
690 $a 0548
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