國立虎尾科技大學 |

Functional Nanocomposite Coatings for Use in Food Packaging.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Functional Nanocomposite Coatings for Use in Food Packaging./
Author:	Webb, Camden.
Description:	1 online resource (108 pages)
Notes:	Source: Masters Abstracts International, Volume: 85-08.
Contained By:	Masters Abstracts International85-08.
Subject:	Metals. -
Online resource:	click for full text (PQDT)
ISBN:	9798381467956

Functional Nanocomposite Coatings for Use in Food Packaging.
Webb, Camden.

Functional Nanocomposite Coatings for Use in Food Packaging. - 1 online resource (108 pages)

Source: Masters Abstracts International, Volume: 85-08.

Thesis (M.Sc.)--California Polytechnic State University, 2023.

Includes bibliographical references

Plastics are a class of materials known for their cost and property advantages, increasing significantly in their usage worldwide. Unfortunately, these benefits come with an increasingly concerning environmental impact. A combination of inadequate disposal options and combinations of materials have led to environmental disasters that will impact generations. One of the worst areas for plastic waste is food packaging. Plastic as a material generally excels at durability and longevity, but as food packaging, it outlives its intended purpose by several orders of magnitude. This leads to plastic food packaging materials sitting in landfill or leading to the environment for hundreds of years. Because of this, there is a strong motivation to develop food packaging materials that are biodegradable, yet still maintain the properties that make plastic better than other classes of materials. Food packaging has many forms, but in general, the most important aspects are cost, mechanical, and oxygen and water barrier properties. To achieve an end-product that excels in these aspects, combinations of materials called composites may be developed. Nanocomposites are a subcategory of composites composed of a matrix material and nanomaterials, separate phases that interact with one another in a number of ways. This research is focused on increasing the mechanical and barrier properties of polyvinyl alcohol, the most commercially-viable biodegradable polymer. The nanomaterials used were graphene oxide (GO) and cellulose nanofibers (CNF) for mechanical and barrier reinforcement. Five sample compositions were produced: a control PVA, CNF, 1 wt% GO, 5 wt% GO, and 10 wt% GO, which were drawn down on uncoated paper and cast by themselves. Testing of these nanocomposites included oxygen transmission, mechanical, and thermal property analysis, and various solvent-interaction testing including absorption of water and oil, Cobb testing, and water vapor permeation. With the addition of CNF and GO to PVA, there was an observed increase in barrier properties through a reduction of hydrophilicity and water absorption, and oxygen permeability.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798381467956Subjects--Topical Terms:

563369
Metals.
Index Terms--Genre/Form:

554714
Electronic books.

Functional Nanocomposite Coatings for Use in Food Packaging.
LDR:03494ntm a22004217 4500 001 1150423
005 20241028051444.5
006 m o d
007 cr bn ---uuuuu
008 250605s2023 xx obm 000 0 eng d
020 $a 9798381467956
035 $a (MiAaPQ)AAI30828487
035 $a (MiAaPQ)CalPoly4378
035 $a AAI30828487
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Webb, Camden. $3 1476901
245 1 0 $a Functional Nanocomposite Coatings for Use in Food Packaging.
264 0 $c 2023
300 $a 1 online resource (108 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 85-08.
500 $a Advisor: Zhang, Shanju.
502 $a Thesis (M.Sc.)--California Polytechnic State University, 2023.
504 $a Includes bibliographical references
520 $a Plastics are a class of materials known for their cost and property advantages, increasing significantly in their usage worldwide. Unfortunately, these benefits come with an increasingly concerning environmental impact. A combination of inadequate disposal options and combinations of materials have led to environmental disasters that will impact generations. One of the worst areas for plastic waste is food packaging. Plastic as a material generally excels at durability and longevity, but as food packaging, it outlives its intended purpose by several orders of magnitude. This leads to plastic food packaging materials sitting in landfill or leading to the environment for hundreds of years. Because of this, there is a strong motivation to develop food packaging materials that are biodegradable, yet still maintain the properties that make plastic better than other classes of materials. Food packaging has many forms, but in general, the most important aspects are cost, mechanical, and oxygen and water barrier properties. To achieve an end-product that excels in these aspects, combinations of materials called composites may be developed. Nanocomposites are a subcategory of composites composed of a matrix material and nanomaterials, separate phases that interact with one another in a number of ways. This research is focused on increasing the mechanical and barrier properties of polyvinyl alcohol, the most commercially-viable biodegradable polymer. The nanomaterials used were graphene oxide (GO) and cellulose nanofibers (CNF) for mechanical and barrier reinforcement. Five sample compositions were produced: a control PVA, CNF, 1 wt% GO, 5 wt% GO, and 10 wt% GO, which were drawn down on uncoated paper and cast by themselves. Testing of these nanocomposites included oxygen transmission, mechanical, and thermal property analysis, and various solvent-interaction testing including absorption of water and oil, Cobb testing, and water vapor permeation. With the addition of CNF and GO to PVA, there was an observed increase in barrier properties through a reduction of hydrophilicity and water absorption, and oxygen permeability.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Metals. $3 563369
650 4 $a Food. $3 581281
650 4 $a Lignin. $3 847953
650 4 $a Petroleum. $3 563503
650 4 $a Chemical reactions. $3 564196
650 4 $a Protective coatings. $3 561717
650 4 $a Nanomaterials. $3 1469258
650 4 $a E coli. $3 1413565
650 4 $a Environmental impact. $3 1372606
650 4 $a Lipids. $3 556565
650 4 $a Contact angle. $3 1049700
650 4 $a Food packaging. $3 1474748
650 4 $a Composite materials. $3 561730
650 4 $a Polymers. $3 561233
650 4 $a Carbon fibers. $3 797597
650 4 $a Recycling. $3 1466020
650 4 $a Additives. $3 1475197
650 4 $a Plastics. $3 563477
650 4 $a Cellulose. $3 678568
650 4 $a Permeability. $3 582006
650 4 $a Antimicrobial agents. $3 1464713
650 4 $a Milk. $3 557465
650 4 $a Industrial engineering. $3 679492
650 4 $a Materials science. $3 557839
650 4 $a Microbiology. $3 591510
650 4 $a Nanotechnology. $3 557660
650 4 $a Packaging. $3 999828
650 4 $a Polymer chemistry. $3 1182163
650 4 $a Sustainability. $3 793436
655 7 $a Electronic books. $2 local $3 554714
690 $a 0795
690 $a 0474
690 $a 0546
690 $a 0794
690 $a 0410
690 $a 0652
690 $a 0549
690 $a 0495
690 $a 0640
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a California Polytechnic State University. $3 1437733
773 0 $t Masters Abstracts International $g 85-08.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30828487 $z click for full text (PQDT)