GB/T 43953-2024Biodegradable poly(glycolic acid) (PGA) (English PDF)

1 Scope

This document defines the terms and definitions of polyglycolic acid (PGA) resins, and specifies the technical requirements, inspection rules, marking, packaging, transportation and

Storage, etc:, and describes the corresponding test methods:

This document applies to polyglycolic acid resins obtained by polymerization using glycolic acid, glycolic acid esters or glycolide as raw materials:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document:

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document:

GB/T 1033:1 Plastics - Determination of density of non-cellular plastics - Part 1: Immersion method, liquid pycnometer method and titration method

GB/T 1040:2 Determination of tensile properties of plastics Part 2: Test conditions for moulding and extruded plastics

GB/T 1043:1 Determination of impact properties of simply supported plastic beams Part 1: Non-instrumented impact test

GB/T 1634:2 Determination of deflection temperature of plastics under load Part 2: Plastics and hard rubber

GB/T 2547 Plastics Sampling Method

GB/T 2918 Standard environment for conditioning and testing of plastic specimens

GB/T 3682:2 Plastics - Determination of melt mass flow rate (MFR) and melt volume flow rate (MVR) of thermoplastics

Part 2: Test methods for materials sensitive to time-temperature history and/or humidity

GB/T 9345:1 Determination of ash content in plastics Part 1: General method

GB/T 17037:1 Plastics - Preparation of injection moulded test specimens for thermoplastic materials - Part 1: General principles and multi-purpose test specimens and long

Preparation of strip specimens

GB/T 19466:2 Plastics Differential Scanning Calorimetry (DSC) Part 2: Determination of Glass Transition Temperature

GB/T 19466:3 Plastics Differential Scanning Calorimetry (DSC) Part 3: Determination of Melting and Crystallization Temperature and Enthalpy

GB/T 37191 Determination of moisture content of raw rubber - Karl Fischer method

GB/T 41010 Degradation performance and labeling requirements for biodegradable plastics and products

3 Terms and definitions

The following terms and definitions apply to this document:

3:1

Poly(glycolicacid);PGA A polymer obtained by chemical synthesis using glycolic acid, glycolate or glycolide as monomers and having the chemical structure shown in Figure 1:

Figure 1 Chemical structure of polyglycolic acid […]