Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
Email

 

You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

Title: Melt compounding of poly (3-hydroxybutyrate-co-3-hydroxyvalerate)/nanofibrillated cellulose nanocomposites

Source: Polymer Degradation and Stability, Volume 98, 2013; pp. 1439-1449.

Author(s)Srithep, Yottha; Ellingham, Thomas; Peng, Jun; Sabo, Ronald; Clemons, Craig; Turng, Lih-Sheng; Pilla, Srikanth

Publication Year: 2013  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4706-2B

Abstract: Using natural cellulosic fibers as fillers for biodegradable polymers can result in fully biodegradable composites. In this study, biodegradable nanocomposites were prepared using nanofibrillated cellulose (NFC) as the reinforcement and poly (3-hydroxybutyrate-co-3-hydroxyvalerate, PHBV) as the polymer matrix. PHBV powder was dispersed in water, mixed with an aqueous suspension of NFC fiber, and freeze-dried. The resulting PHBV/15 wt% NFC was then used as a master batch in a subsequent melt compounding process to produce nanocomposites of various formulations. Its properties such as its mechanical properties, crystallization behavior, solubility of carbon dioxide (CO2), foaming behavior, and thermal stability and degradation of PHBV due to NFC were evaluated. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to study the dispersion of NFC fibers. Adding NFC increased the tensile modulus of the PHBV/NFC nanocomposites nearly twofold. Differential scanning calorimetry (DSC) analysis showed that the NFC served as a nucleating agent, promoting the early onset of crystallization. However, high NFC content also led to greater thermal degradation of the PHBV matrix. Dynamic mechanical analysis (DMA) showed an increase of the storage modulus in the glassy state with increasing NFC content, but a more significant increase in modulus was detected above the glass transition temperature. The solubility of CO2 in the PHBV/NFC nanocomposites decreased and the desorption diffusivity increased as more NFC was added. Finally, the foaming behavior of PHBV/NFC nanocomposites was studied and the addition of NFC was found to inhibit foaming.

Keywords: Nanofibrillated cellulose (NFC); Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanocomposites; Mechanical and thermal properties; Carbon dioxide solubility and foaming; Thermal stability and degradation

Publication Review Process: Formally Refereed

File size: 3,432 kb(s)

Date posted: 07/17/2013
RITS Product ID: 64470
Current FPL Scientists associated with this product (listed alphabetically)
Clemons, Craig M.
Materials Research Engineer
Sabo, Ronald C.
Research Materials Engineer
 

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »


Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »


Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


Nanotechnology

A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »


Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »