Enzyme-assisted modification of cellulose/chitin fibers with NIPAAm

ANAMARIA IRIMIA; EMILIA CSISZAR; MARIUS DOBROMIR; FLORICA DOROFTEI; CORNELIA VASILE

Makale detayları

Enzyme-assisted modification of cellulose/chitin fibers with NIPAAm

Yazarlar:

ANAMARIA IRIMIA | EMILIA CSISZAR | MARIUS DOBROMIR | FLORICA DOROFTEI | CORNELIA VASILE

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2015 Vol.39 Issue 5, pp.1089-1101

Belge Tipi:

Makale

Yayın Tarihi:

12/2015

Belge Dili:

Türkçe

Document ID (Org No.):

2000726794

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

Coating processes are applied in order to improve coating adhesion and resistance to degradation. Covalently bound organic coatings rather than merely physically bound ones assure stable modification. In this study a novel two-step process was developed to modify cellulose/chitin mix fibers consisting of enzymatic activation with a commercial cellulase, followed by a coupling reaction with N-isopropylacrylamide (or poly (N-isopropylacrylamide)) in the presence of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDC) and N-hydroxysuccinimide (NHS).  Both enzyme-activated and subsequently modified samples were characterized by ATR-FTIR, XPS, and SEM. All obtained results confirm the structural and morphological changes of the fiber surface after the application of the two-step procedure. The particular responsiveness to temperature and to pH of the coated fibers was evidenced by following the swelling behavior. It was established that the swelling kinetics followed a Fickian behavior.

 

Coating processes are applied in order to improve coating adhesion and resistance to degradation. Covalently bound organic coatings rather than merely physically bound ones assure stable modification. In this study a novel two-step process was developed to modify cellulose/chitin mix fibers consisting of enzymatic activation with a commercial cellulase, followed by a coupling reaction with N-isopropylacrylamide (or poly (N-isopropylacrylamide)) in the presence of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDC) and N-hydroxysuccinimide (NHS).  Both enzyme-activated and subsequently modified samples were characterized by ATR-FTIR, XPS, and SEM. All obtained results confirm the structural and morphological changes of the fiber surface after the application of the two-step procedure. The particular responsiveness to temperature and to pH of the coated fibers was evidenced by following the swelling behavior. It was established that the swelling kinetics followed a Fickian behavior.

Makale detayları

Enzyme-assisted modification of cellulose/chitin fibers with NIPAAm

Yazarlar: ANAMARIA IRIMIA | EMILIA CSISZAR | MARIUS DOBROMIR | FLORICA DOROFTEI | CORNELIA VASILE

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2015 Vol.39 Issue 5, pp.1089-1101

Belge Tipi: Makale

Yayın Tarihi: 12/2015

Belge Dili: Türkçe

Document ID (Org No.): 2000726794

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

ANAMARIA IRIMIA | EMILIA CSISZAR | MARIUS DOBROMIR | FLORICA DOROFTEI | CORNELIA VASILE

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2015 Vol.39 Issue 5, pp.1089-1101

Belge Tipi:

Makale

Yayın Tarihi:

12/2015

Belge Dili:

Türkçe

Document ID (Org No.):

2000726794

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527