INDUSTRY COMPONENT

Polymer Chain

Polymer chain is the fundamental molecular structure in polyethylene glycol, consisting of repeating ethylene oxide units that determine material properties.

Component Specifications

Definition
A polymer chain in industrial-grade polyethylene glycol refers to the linear macromolecular structure formed through polymerization of ethylene oxide monomers. These chains exhibit specific molecular weight distributions, chain lengths, and end-group functionalities that directly influence viscosity, thermal stability, solubility, and chemical reactivity in industrial applications.
Working Principle
Polymer chains function through covalent bonding between repeating monomer units, creating long-chain molecules. The chain length and molecular weight determine physical properties through entanglement and intermolecular forces, while end-group chemistry affects reactivity and compatibility with other substances.
Materials
High-purity ethylene oxide monomers, catalyst systems (typically alkali metal hydroxides or double metal cyanide complexes), chain transfer agents for molecular weight control, and stabilizers against thermal degradation.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Color (APHA)<50
Water Content<0.5%
Hydroxyl Value10-560 mg KOH/g
PH (5% Solution)4.5-7.5
Viscosity (40°C)5-15,000 mPa·s
Melting Point Range4-65°C
Polydispersity Index1.01-1.20
Molecular Weight Range200-35,000 g/mol

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 9001, ISO 14001, ASTM D4875, USP-NF, EP, JP

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Thermal degradation at high temperatures
  • Oxidative chain scission
  • Moisture absorption affecting properties
  • Catalyst residue contamination
  • Molecular weight distribution variability
FMEA Triads
Trigger: Inadequate temperature control during polymerization
Failure: Broad molecular weight distribution and inconsistent properties
Mitigation: Implement precise temperature monitoring systems and automated control loops
Trigger: Catalyst deactivation or contamination
Failure: Incomplete polymerization and low molecular weight products
Mitigation: Regular catalyst quality testing and controlled storage conditions
Trigger: Moisture ingress during processing
Failure: Hydrolysis and chain termination leading to property deviations
Mitigation: Maintain nitrogen blanket systems and moisture monitoring

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±2% molecular weight variation, ±5% hydroxyl value, ±10% viscosity range
Test Method
GPC/SEC for molecular weight, titration for hydroxyl value, rotational viscometry, FTIR for structure confirmation

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Polymer Chain

Manufacturer profiles associated with Polymer Chain.

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Frequently Asked Questions

What determines the properties of polyethylene glycol polymer chains?

Molecular weight distribution, chain length, end-group functionality, and polymerization method primarily determine viscosity, solubility, thermal stability, and chemical reactivity.

How are polymer chains controlled during manufacturing?

Through catalyst selection, reaction temperature, pressure control, monomer purity, and chain transfer agents to achieve specific molecular weights and narrow polydispersity.

What industrial applications use polyethylene glycol polymer chains?

Pharmaceuticals (excipients), cosmetics (emollients), lubricants, plasticizers, hydraulic fluids, and chemical intermediates in various manufacturing processes.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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