Poly(4-chlorostyrene)

Catalog NumberHG-BULK24991477

CAS Number24991-47-7

CategoryPolymers

Molecular Weight

Mw ~ 7kDa

Appearance

Light yellow powder

Application

High-Frequency Electronics: High dielectric constant materials suitable for 5G circuit boards and flexible display insulation layers.; Corrosion-Resistant Materials: Coatings on metal surfaces provide protective layers with peel strength >15 MPa, applicable to marine equipment and chemical pipelines.; Engineering Plastics: Injection-molded automotive heat-resistant parts (sensor brackets, headlight housings) withstand high temperatures in engine compartments.

Storage

Keep in a cool, dark, and dry place

Specification

96% min

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Case Study

Poly(4-chlorostyrene) as Grafted Matrix for Nanofiltration Membranes with Gold/Polystyrene Nanoparticle Reinforcement

Kausar, Ayesha. Am J Polym Sci Eng 3 (2015): 33-49.

Poly(4-chlorostyrene) (PCS) was grafted with a novel thiourea-based diamine [1-(4-thiocarbamoylaminophenylsulfonylphenyl)thiourea] to form PCS-g-DA, which served as a hydrophilic, crosslinkable membrane matrix. Composite nanofiltration membranes were reinforced with gold/polystyrene composite nanoparticles (AuNPs-PSNPs) for enhanced water treatment performance.
Membrane Fabrication: PCS-g-DA was prepared by refluxing PCS with the diamine in THF. AuNPs-PSNPs (30-50 nm, synthesized via in-situ reduction on polystyrene microspheres) were added at 0.1-1 wt% and sonicated. Membranes were cast by phase inversion (THF/water).
Performance Evaluation: Tensile strength increased from 27.7 MPa (neat PCS-g-DA) to 37.6 MPa at 1 wt% filler, while elongation at break decreased (5.2%→3.7%). Porosity in water rose from 0.11 to 0.29 g/cm2; water uptake increased to 3.17%. Pure water flux reached 17.4 mL/cm2/min (vs. 14.2 for neat membrane). NaCl rejection improved to 72.2% (from 45.2%) and recovery to 87.2%. The membrane with 1 wt% AuNPs-PSNPs showed 99% removal efficiency for Pb2+ and Hg2+ via combined thiourea chelation and nanoparticle adsorption. Tg increased from 99 °C to 151 °C, indicating higher rigidity.
Conclusion: Poly(4-chlorostyrene)-based grafted membranes with AuNPs-PSNPs exhibit excellent mechanical strength, high flux, and superior heavy metal removal, making them promising for advanced nanofiltration applications.

Poly(4-chlorostyrene) as a Model Polymer Revealing How Solution Filtering Controls Nanoconfinement Effects

Debot, Alice, et al. The European Physical Journal E 42.8 (2019): 102.

Poly(4-chlorostyrene) (P4ClS) exhibits segmental dynamics highly sensitive to changes in specific volume. This sensitivity makes it an ideal system to probe how sample preparation-specifically solution filtering-affects the glassy dynamics of thin films.
Experimental Protocol: Thin films (10-200 nm) of P4ClS (Mw = 75 kg/mol) were spincoated from toluene solutions either filtered (0.2-0.45 µm PTFE) or unfiltered. Capacitor structures (Al/polymer/Al) were prepared. Dielectric relaxation was measured (0.1 Hz-1 MHz, 423-433 K) to obtain segmental relaxation times. Irreversible adsorption onto Al was quantified by the Guiselin method.
Performance Evaluation: Films from filtered solutions showed strong nanoconfinement: at 10 nm thickness, relaxation time at 423 K was ~100× faster than bulk. Films from unfiltered solutions exhibited bulk-like dynamics down to 15-20 nm, with only a 2-3× acceleration at 10 nm. The cooperative free volume (CFV) model fitted the data with interfacial free volume parameter δ_free = 0.33 nm (filtered) vs. 0.08 nm (unfiltered), corresponding to ~2% and ~0.5% density reduction at the interface, respectively. Adsorption experiments confirmed that unfiltered samples had a thicker adsorbed layer (≈5 nm vs. ≈3 nm at the measurement time) and saturated faster, indicating lower interfacial free volume.
Conclusion: Solution filtering critically alters the interfacial free volume and thus the confinement-induced acceleration of segmental dynamics in poly(4-chlorostyrene) thin films, offering a simple way to switch nanoconfinement effects on and off.

• Molecular Weight: Mw ~ 7kDa
• Appearance: Light yellow powder
• Application: High-Frequency Electronics: High dielectric constant materials suitable for 5G circuit boards and flexible display insulation layers.; Corrosion-Resistant Materials: Coatings on metal surfaces provide protective layers with peel strength >15 MPa, applicable to marine equipment and chemical pipelines.; Engineering Plastics: Injection-molded automotive heat-resistant parts (sensor brackets, headlight housings) withstand high temperatures in engine compartments.
• Storage: Keep in a cool, dark, and dry place
• Specification: 96% min