Ultrasonic Chain Scission of Polyacrylamide in Solution: Online Monitoring Results and Comparison with Theoretical Models

Akyuz, Ali; Giz, Ahmet; Catalgil-Giz, Huceste

doi:10.1080/00222348.2018.1480205

Ultrasonic Chain Scission of Polyacrylamide in Solution: Online Monitoring Results and Comparison with Theoretical Models

Atıf İçin Kopyala

Akyuz A., Giz A., Catalgil-Giz H.

JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS, cilt.57, sa.7, ss.527-540, 2018 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 57 Sayı: 7
Basım Tarihi: 2018
Doi Numarası: 10.1080/00222348.2018.1480205
Dergi Adı: JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.527-540
İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Ultrasonic processing of a water soluble polymer, polyacrylamide, is investigated and molecular weight evolution during ultrasonic degradation was monitored online by light scattering and viscometry. The resulting Data were compared to various theoretical models. Initially the scission was very rapid but as the limiting molecular weight was approached it slowed down. This slowing down was too pronounced to be described by a first order model. Only the Giz, Ovenall/Harrington/Madras and Tang models, adequately accounted for this slowing down and gave good fits to the data.