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Development and Characterization of ...

Kuo, Pei-Yu.

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Development and Characterization of an Extractive-based Bio-Epoxy Resin from Beetle-Infested Lodgepole Pine (Pinus contorta var. latifolia) Bark.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Development and Characterization of an Extractive-based Bio-Epoxy Resin from Beetle-Infested Lodgepole Pine (Pinus contorta var. latifolia) Bark./
作者:	Kuo, Pei-Yu.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
面頁冊數:	184 p.
附註:	Source: Dissertation Abstracts International, Volume: 78-01(E), Section: B.
Contained By:	Dissertation Abstracts International78-01B(E).
標題:	Polymer chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10139175
ISBN:	9781339946726

Development and Characterization of an Extractive-based Bio-Epoxy Resin from Beetle-Infested Lodgepole Pine (Pinus contorta var. latifolia) Bark.
Kuo, Pei-Yu.

Development and Characterization of an Extractive-based Bio-Epoxy Resin from Beetle-Infested Lodgepole Pine (Pinus contorta var. latifolia) Bark. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 184 p.

Source: Dissertation Abstracts International, Volume: 78-01(E), Section: B.

Thesis (Ph.D.)--University of Toronto (Canada), 2016.

Deriving chemicals from renewable feedstock has become a necessity to reduce dependency on petroleum, which release carbon dioxide when burned and aggravate the global warming and ocean acidification. This work offers a potential alternative - bark extractives based epoxy resin - to petro-based conventional epoxy. Our results showed successful epoxidation of bark extractives after reaction with epichlorohydrin. The newly synthesized epoxy (E-epoxy) can replace 50% of petroleum-based epoxy (P-epoxy) and the blend system displayed thermal stability and tensile strength comparable to neat P-epoxy, which demonstrates a great promise in using bark extractives as a substitute for bisphenol A (BPA).

ISBN: 9781339946726Subjects--Topical Terms:

3173488
Polymer chemistry.

Development and Characterization of an Extractive-based Bio-Epoxy Resin from Beetle-Infested Lodgepole Pine (Pinus contorta var. latifolia) Bark.
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245 1 0 $a Development and Characterization of an Extractive-based Bio-Epoxy Resin from Beetle-Infested Lodgepole Pine (Pinus contorta var. latifolia) Bark.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2016
300 $a 184 p.
500 $a Source: Dissertation Abstracts International, Volume: 78-01(E), Section: B.
500 $a Advisers: Mohini Sain; Ning Yan.
502 $a Thesis (Ph.D.)--University of Toronto (Canada), 2016.
520 $a Deriving chemicals from renewable feedstock has become a necessity to reduce dependency on petroleum, which release carbon dioxide when burned and aggravate the global warming and ocean acidification. This work offers a potential alternative - bark extractives based epoxy resin - to petro-based conventional epoxy. Our results showed successful epoxidation of bark extractives after reaction with epichlorohydrin. The newly synthesized epoxy (E-epoxy) can replace 50% of petroleum-based epoxy (P-epoxy) and the blend system displayed thermal stability and tensile strength comparable to neat P-epoxy, which demonstrates a great promise in using bark extractives as a substitute for bisphenol A (BPA).
520 $a An examination of reaction parameters showed that the E-epoxy monomer can be synthesized with high yield and reactivity using spray-dried extractives as substrates, a dioxane/water combination as solvent, and tetrabutylammonium hydroxide as the ring-opening catalyst. An examination of numerical parameters showed the maximum yield with minimum epoxy equivalent weight was achieved after 4.5 hours reaction time with sodium hydroxide to hydroxyl value molar ratio of 3.4 at a reaction temperature of 80 °C. The thermal properties of E-epoxy were studied using TGA, FTIR, and Py-GC/MS, and a new thermal degradation mechanism was proposed.
520 $a Additionally, nanocellulose fibres (NCFs) were incorporated to enhance E-epoxy's mechanical performance. Based on an adjusted curing schedule, an E-epoxy/P-epoxy/NCFs composite with high strength, ductility, thermal stability, and sustainability was developed. With 10% E-epoxy, the toughness of neat epoxy resins improved 84 %; after incorporating NCFs, the tensile strength and modulus of composites increased approximately two- and four-fold, respectively. The maximum degradation peak of the composites was 24 °C higher than for neat epoxy resins.
520 $a Overall, bark extractives exhibit great promise to replace petro-based BPA; incorporating NCFs into E-epoxy/P-epoxy blending system is an effective method to develop a strong and sustainable bio-nanocomposite.
590 $a School code: 0779.
650 4 $a Polymer chemistry. $3 3173488
650 4 $a Forestry. $3 895157
650 4 $a Wood sciences. $3 3168288
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710 2 $a University of Toronto (Canada). $b Forestry. $3 3174961
773 0 $t Dissertation Abstracts International $g 78-01B(E).
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856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10139175