Published 2021 | Version v1
Miscellaneous Open

Determination of crystallinity and water vapour permeability of biopolymer P3(HB-co-HHx)

Creators

  • 1. Advanced Materials Lab, State University of Northern Rio de Janeiro (UENF), Campos dos Goytacazes, RJ (Brazil)
  • 2. Dept, of Microbiology, University of São Paulo (USP), São Paulo, SP (Brazil)

Description

Films of P3HB and the biopolymer poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) [P3(HB-co-HHx)] containing 19.69mol% of the comonomer 3HHx were characterized by X-Ray Diffraction and its water vapour permeability determined based on the gravimetric method at temperatures of 25 and 50°C. The copolymer revealed a strong influence on the reduction of the crystallinity of the 3HHx units in relation to P3HB, on the other hand a greater permeability to water vapor of P3 (HB-co-HHx) was found, showing the reduction of the barrier to the transport of the permeant. (author)

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Additional details

Publishing Information

Imprint Pagination
4 p.
Report number
INIS-BR--24491

Conference

Title
Brazilian congress on polymers
Acronym
16. CBPOL
Dates
24-28 Oct 2021
Place
Ouro Preto, MG (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
53111442
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BIOLOGICAL MATERIALS; COPOLYMERS; CRYSTALLIZATION; FILMS; GRAVIMETRY; PERMEABILITY; POLYMERS; WATER VAPOR; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; DIFFRACTION; FLUIDS; GASES; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; POLYMERS; SCATTERING; VAPORS