2-Sulfoethyl methacrylate

• CAS: 10595-80-9
• Catalog Number: ACM10595809-2
• Category: Main Products
• Molecular Weight: 194.14
• Molecular Formula: C6H10O5S
• Synonyms: 2-(methacryloyloxy)ethanesulfonic acid
• Appearance: Liquid

Case Study

2-Sulfoethyl Methacrylate Used in the Preparation of Proton Conductive Cross-Linked Membranes

Patel R, et al. Membrane Journal, 2013, 23(4), 290-296.

A novel proton conducting membrane consisting of poly(vinylidenefluoride-co-chlorotrifluoroethylene) P(VDF-co-CTFE), methacrylic acid (MAA) and 2-sulfoethyl methacrylate (SEMA) is prepared. As the SEMA concentration in the membrane increases, the IEC value continues to increase. At 50% SEMA, the maximum ion exchange capacity (IEC) value of the membrane is 0.82 meq/g, and the maximum proton conductivity is 0.041 S/cm.
Preparation of P(VDF-co-CTFE)-MAA/SEMA Membranes
· To prepare the P(VDF-co-CTFE)-MAA/SEMA membrane, a different amount of P(VDF-co-CTFE)-MAA was dissolved in 3 mL NMP, and then the different amount of SEMA was added with stirring, followed by 0.015 g ACVA.
· The detailed composition of each component is presented in Table 1. The mixture was stirred for 1 day and poured into a glass dish. Finally, the dish was put into an oven at 80 °C for 24 h and the solution became a membrane. Pouring some water into the glass to peel the membrane off and a light brown membrane was obtained. The prepared membranes were stored in water until ready to be used.

Preparation of Polymer Electrolyte Membrane Based on SBS and 2-Sulfoethyl Methacrylate

Roh D K, et al. Journal of Applied Polymer Science, 2011, 121(6), 3283-3291.

A cross-linked polymer electrolyte based on poly(styrene-b-butadiene-b-styrene) (SBS) triblock copolymer and the sulfonated monomer 2-sulfoethyl methacrylate (SEMA) was prepared membrane. The ion exchange capacity (IEC) value and water absorption rate of the prepared cross-linked SBS/SEMA membrane increased with the increase of SEMA content in the membrane. Above 33 wt% of SEMA, a channel for proton ion movement is fully formed, and the proton conductivity of the membrane suddenly jumps from 0.004 S/cm to 0.04 S/cm.
SBS/SEMA membrane preparation
· The crosslinked SBS/SEMA membrane was prepared by blending SBS and SEMA in THF. First, SBS was dissolved in THF for 60 min, and then SEMA was added to the SBS solution. The weight ratios of SEMA to SBS were changed from 12.5 to 50.0 wt %. The solution was stirred for 30 min.
· Next, the initiator, 4'-azobis(4-cyanovaleric acid) ACVA (5 wt % of the solution) was added to the solution, and then the solution was stirred at room temperature for 1 h for thorough mixing.
· Finally, the solution was cast onto a glass dish, which was covered with aluminum foil. The dishes were dried in an oven at 80 °C for 48 h under N2 atmosphere.