𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Studies on microgels, 1. Microgel formation studied by gel-permeation chromatography with an on-line light scattering detector

✍ Scribed by Ludger Pille; David H. Solomon

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
588 KB
Volume
195
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The previously described microgel synthesis in which living poly(4‐tert‐butylstyrene) was reacted with 1,4‐divinylbenzene was studied. Samples were taken after the addition of the crosslinker and characterized by gel‐permeation chromatography (GPC) with an on‐line multi angle laser light scattering (MALLS)‐ and a differential refractive index (DRI) detector. Primary particle formation was found early in the reaction followed by interparticular crosslinking. The GPC calibration curves allowed the derivation of a branching plot. The branching plots showed, that in addition to interparticular crosslink reactions also intraparticular crosslink reactions are occurring. The plots also showed that the primary particles scale like linear polymers, which led to the conclusion that they consist of comb‐like structures with poly(4‐vinylstyrene) as the backbone and poly(4‐tert‐butylstyrene) as branches.

📜 SIMILAR VOLUMES

Size-Exclusion Chromatography with On-Li
Size-Exclusion Chromatography with On-Line Light-Scattering, Absorbance, and Refractive Index Detectors for Studying Proteins and Their Interactions
✍ Jie Wen; Tsutomu Arakawa; John S. Philo 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 249 KB

small and large molecules in a highly specific manner LS/UV/RI, size-exclusion chromatography with on-line light-scatand hence knowledge of how they interact with other tering, uv absorbance, refractive index detectors; (LS), intensity of molecules is fundamental for understanding their funclight-sc

Physicochemical studies on xylinan (acet
Physicochemical studies on xylinan (acetan). I. Characterization by G permeation chromatography on sepharose Cl-2B coupled with static light scattering and viscometry
✍ Gisela Berth; Herbert Dautzenberg; Bjørn E. Christensen; Gudrun Rother; Olav Smi 📂 Article 📅 1998 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 799 KB

Laboratory-made samples of the polysaccharide xylinan (acetan) were fiactionated on Sepharose Cl-2B using O.IM NaCl as eluant. The weight average molar masses and intrinsic viscosities were estimaled in the fractions by multiangle laser light scattering (oflline) and capillary viscometPy, respective