PMID- 35987355
OWN - NLM
STAT- MEDLINE
DCOM- 20221014
LR  - 20221014
IS  - 1879-0003 (Electronic)
IS  - 0141-8130 (Linking)
VI  - 220
DP  - 2022 Nov 1
TI  - Biobased and compostable trilayer thermoplastic films based on 
      poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and thermoplastic starch 
      (TPS).
PG  - 385-394
LID - S0141-8130(22)01781-0 [pii]
LID - 10.1016/j.ijbiomac.2022.08.079 [doi]
AB  - Food preservation is crucial in safeguarding the global food supply and security. 
      Current regulations do not encourage the use of chemical food preservatives. 
      Therefore, creating a physical barrier in the form of packaging remains a 
      necessary measure to prevent food contact with biological and physical 
      contaminants. This work presents a novel biodegradable thin trilayer assembly of 
      two sandwiching layers of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), 
      and a core layer composed of thermoplastic starch (TPS), maleated TPS, or their 
      blends with PHBV (80/20). Scanning electron microscope (SEM), and optical 
      microscopy images showed the samples' consistent film formation. The tensile test 
      revealed that the sample with a core layer of a blend of maleated TPS and PHBV 
      was the strongest, with a modulus of 178 MPa. The water vapor transmission rates 
      were as low as 20.2 g/(m(2).d). The oxygen permeation rate was below the 
      detection limit of the test. Most importantly, the samples pass the 
      biodegradation (28  degrees C) disintegration test in less than six weeks. The study 
      confirmed that a trilayer structure with two outer layers of PHBV, and a middle 
      layer of TPS-PHBV blend provides excellent barrier properties in conjuncture with 
      its biodegradability making it an appealing, sustainable food packaging material 
      option.
CI  - Copyright (c) 2022 Elsevier B.V. All rights reserved.
FAU - Eslami, Hormoz
AU  - Eslami H
AD  - Department of Chemical Engineering, Institute of Polymer Research, Waterloo 
      Institute of Nanotechnology, University of Waterloo, Waterloo, ON, Canada.
FAU - Grady, Mark
AU  - Grady M
AD  - Club Coffee L.P., 101 Claireville Drive, Toronto, ON M9W 6K9, Canada.
FAU - Mekonnen, Tizazu H
AU  - Mekonnen TH
AD  - Department of Chemical Engineering, Institute of Polymer Research, Waterloo 
      Institute of Nanotechnology, University of Waterloo, Waterloo, ON, Canada. 
      Electronic address: tmekonnen@uwaterloo.ca.
LA  - eng
PT  - Journal Article
DEP - 20220818
PL  - Netherlands
TA  - Int J Biol Macromol
JT  - International journal of biological macromolecules
JID - 7909578
RN  - 0 (Food Preservatives)
RN  - 0 (Hydroxybutyrates)
RN  - 0 (Pentanoic Acids)
RN  - 0 (Polyesters)
RN  - 0 (Steam)
RN  - 0 (poly(3-hydroxybutyrate)-co-(3-hydroxyvalerate))
RN  - 10237-77-1 (beta-hydroxyvaleric acid)
RN  - 9005-25-8 (Starch)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Food Preservatives
MH  - Hydroxybutyrates
MH  - Oxygen
MH  - Pentanoic Acids
MH  - Polyesters/chemistry
MH  - *Starch/chemistry
MH  - *Steam
OTO - NOTNLM
OT  - Barrier properties
OT  - Bio-based
OT  - Biodegradable
OT  - Multilayer
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2022/08/21 06:00
MHDA- 2022/10/15 06:00
CRDT- 2022/08/20 19:33
PHST- 2022/06/22 00:00 [received]
PHST- 2022/08/05 00:00 [revised]
PHST- 2022/08/11 00:00 [accepted]
PHST- 2022/08/21 06:00 [pubmed]
PHST- 2022/10/15 06:00 [medline]
PHST- 2022/08/20 19:33 [entrez]
AID - S0141-8130(22)01781-0 [pii]
AID - 10.1016/j.ijbiomac.2022.08.079 [doi]
PST - ppublish
SO  - Int J Biol Macromol. 2022 Nov 1;220:385-394. doi: 10.1016/j.ijbiomac.2022.08.079. 
      Epub 2022 Aug 18.