公开(公告)号：US20210079211A1

公开(公告)日：2021-03-18

申请号：US16772998

申请日：2018-12-14

Applicant: UNIVERSITY OF GUELPH

Inventor： Amar Kumar MOHANTY ,  Manjusri MISRA ,  Feng WU

IPC: C08L67/04 ,  C08J3/24

Abstract: A highly compatibilized biodegradable composite with high impact strength including: (a) a polymeric matrix having one or more biodegradable polymers; (b) one or more fillers; and (c) free radical initiators are fabricated via one-step reactive extrusion method. An in-situ free radical reaction method of manufacturing the biodegradable composite, including the step of (a) (1) mixing one or more biodegradable polymers and a free radical initiator; (2) melting step (1) thereby manufacturing the highly compatibilized biodegradable matrix. (b) Mixing the composites of step (a) and fillers or second biodegradable polymers, thereby manufacturing the biodegradable composite. Also, nano-blends are successfully prepared in this invention ascribe to the improved compatibility of the different components.

公开(公告)号：US20230192983A1

公开(公告)日：2023-06-22

申请号：US17925549

申请日：2021-05-14

Applicant: University of Guelph

Inventor： Amar MOHANTY ,  Feng WU ,  Manjusri MISRA ,  Akhilesh PAL ,  Arturo RODRIGUEZ-URIBE ,  Tao WANG

IPC: C08K3/04 ,  B65D85/804 ,  B65D1/34 ,  C08K3/34 ,  C08L67/02 ,  C08L67/04 ,  C08J5/18

CPC classification number: C08K3/04 ,  B65D85/8043 ,  B65D1/34 ,  C08K3/34 ,  C08L67/02 ,  C08L67/04 ,  C08J5/18 ,  C08L2201/06 ,  C08L2201/14 ,  C08L2203/16 ,  C08L2203/30 ,  C08L2205/08 ,  C08K2003/343 ,  C08J2367/02 ,  C08J2367/04 ,  C08J2403/02 ,  C08J2451/00

Abstract: A biodegradable composite comprising a polymeric matrix including but not limited to poly lactide (PLA), poly (butylene succinate) 20 (PBS), poly(butylene succinate adipate) (PBSA), including bio-based PBSA (BioPBSA), poly(butylene adipate-co-terephthalate) (PBAT), polycaprolactone (PCL), polyhydroxyalkanoate (PHA(s)), poly(3-hydroxy)butyrate (PHB), poly(3-hydroxy-butyrate-hydroxyvalerate) (PHBV), copolyester of the monomers 1.4-butanediol, adipic acid and terephthalic acid (Ecoflex™) and polypropylene carbonate (PPC), and biocarbon, a.k.a. biochar or pyrolyzed biomass as a sustainable filler. The biodegradable composite achieves high oxygen barrier with balanced water barrier. Also, a method of manufacturing the biodegradable composite and articles of manufacturing comprising the biodegradable composite. The articles of manufacturing have application in limiting gas permeation into a package and extending shelf life of a material.