Starch-based biocomposite films reinforced with cellulose nanocrystals from garlic stalks

Melissa B. Agustin; Bashir Ahmmad; Enna Richel P. de Leon; Jerico L. Buenaobra; Joel R. Salazar; Fumihiko Hirose

doi:10.1002/pc.22546

Starch-based biocomposite films reinforced with cellulose nanocrystals from garlic stalks

Melissa B. Agustin, Bashir Ahmmad (Corresponding Author), Enna Richel P. de Leon, Jerico L. Buenaobra, Joel R. Salazar, Fumihiko Hirose

Not published at VTT

Research output: Contribution to journal › Article › Scientific › peer-review

89 Citations (Scopus)

Abstract

The study was conducted to reinforce starch-based biocomposite films using cellulose nanocrystals (CNCs) from garlic stalks. An average yield of 4.6% by mass based from air-dried garlic stalks was obtained through alkali delignification, acid hydrolysis and sonication. The isolated CNCs are spherical and have an average diameter of 35 nm and crystallinity of 62%. Fourier transform infrared spectra correspond to the structure of cellulose, but some absorption bands corresponding to hemicelluloses were also noticed. Starch-based biocomposite films with varying amount of the isolated CNCs as reinforcing filler were prepared by solution casting and evaporation method. Scanning electron micrographs of the films showed homogeneous dispersion of CNC in the starch matrix. Improvement in tensile strength and modulus was at maximum when the starch to CNC ratio is 100:5. The thermal stability of the films, on the other hand, decreased with the addition of CNC. Finally, CNC-reinforced films had lower moisture uptake than nonreinforced films.

Original language	English
Pages (from-to)	1325–1332
Journal	Polymer Composites
Volume	34
DOIs	https://doi.org/10.1002/pc.22546
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed

Access to Document

10.1002/pc.22546

Cite this

@article{859515b037c14d7898bf98065e553bc2,

title = "Starch-based biocomposite films reinforced with cellulose nanocrystals from garlic stalks",

abstract = "The study was conducted to reinforce starch-based biocomposite films using cellulose nanocrystals (CNCs) from garlic stalks. An average yield of 4.6% by mass based from air-dried garlic stalks was obtained through alkali delignification, acid hydrolysis and sonication. The isolated CNCs are spherical and have an average diameter of 35 nm and crystallinity of 62%. Fourier transform infrared spectra correspond to the structure of cellulose, but some absorption bands corresponding to hemicelluloses were also noticed. Starch-based biocomposite films with varying amount of the isolated CNCs as reinforcing filler were prepared by solution casting and evaporation method. Scanning electron micrographs of the films showed homogeneous dispersion of CNC in the starch matrix. Improvement in tensile strength and modulus was at maximum when the starch to CNC ratio is 100:5. The thermal stability of the films, on the other hand, decreased with the addition of CNC. Finally, CNC-reinforced films had lower moisture uptake than nonreinforced films.",

author = "Agustin, {Melissa B.} and Bashir Ahmmad and {de Leon}, {Enna Richel P.} and Buenaobra, {Jerico L.} and Salazar, {Joel R.} and Fumihiko Hirose",

year = "2013",

doi = "10.1002/pc.22546",

language = "English",

volume = "34",

pages = "1325–1332",

journal = "Polymer Composites",

issn = "0272-8397",

publisher = "John Wiley & Sons Inc.",

}

TY - JOUR

T1 - Starch-based biocomposite films reinforced with cellulose nanocrystals from garlic stalks

AU - Agustin, Melissa B.

AU - Ahmmad, Bashir

AU - de Leon, Enna Richel P.

AU - Buenaobra, Jerico L.

AU - Salazar, Joel R.

AU - Hirose, Fumihiko

PY - 2013

Y1 - 2013

N2 - The study was conducted to reinforce starch-based biocomposite films using cellulose nanocrystals (CNCs) from garlic stalks. An average yield of 4.6% by mass based from air-dried garlic stalks was obtained through alkali delignification, acid hydrolysis and sonication. The isolated CNCs are spherical and have an average diameter of 35 nm and crystallinity of 62%. Fourier transform infrared spectra correspond to the structure of cellulose, but some absorption bands corresponding to hemicelluloses were also noticed. Starch-based biocomposite films with varying amount of the isolated CNCs as reinforcing filler were prepared by solution casting and evaporation method. Scanning electron micrographs of the films showed homogeneous dispersion of CNC in the starch matrix. Improvement in tensile strength and modulus was at maximum when the starch to CNC ratio is 100:5. The thermal stability of the films, on the other hand, decreased with the addition of CNC. Finally, CNC-reinforced films had lower moisture uptake than nonreinforced films.

AB - The study was conducted to reinforce starch-based biocomposite films using cellulose nanocrystals (CNCs) from garlic stalks. An average yield of 4.6% by mass based from air-dried garlic stalks was obtained through alkali delignification, acid hydrolysis and sonication. The isolated CNCs are spherical and have an average diameter of 35 nm and crystallinity of 62%. Fourier transform infrared spectra correspond to the structure of cellulose, but some absorption bands corresponding to hemicelluloses were also noticed. Starch-based biocomposite films with varying amount of the isolated CNCs as reinforcing filler were prepared by solution casting and evaporation method. Scanning electron micrographs of the films showed homogeneous dispersion of CNC in the starch matrix. Improvement in tensile strength and modulus was at maximum when the starch to CNC ratio is 100:5. The thermal stability of the films, on the other hand, decreased with the addition of CNC. Finally, CNC-reinforced films had lower moisture uptake than nonreinforced films.

UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84880257233&partnerID=MN8TOARS

U2 - 10.1002/pc.22546

DO - 10.1002/pc.22546

M3 - Article

SN - 0272-8397

VL - 34

SP - 1325

EP - 1332

JO - Polymer Composites

JF - Polymer Composites

ER -

Starch-based biocomposite films reinforced with cellulose nanocrystals from garlic stalks

Abstract

Access to Document

Other files and links

Fingerprint

Cite this