POLYMER TESTING
Mechanical, thermal, and rheological testing methods used to evaluate polymer materials and products.
“A number on a datasheet is only as trustworthy as the test that produced it.”
— Polymer Testing · PolymerHub
10 Lessons
GC-MS Screening of Polymer Extractables & Leachables: Sample Prep, Chromatography & Mass Spectra
Analytical chemistry workflow for volatile/semi-volatile extractables and leachables, overall vs specific migration, AET thresholds, and mass-spectral library matching.
Differential Scanning Calorimetry (DSC): Tg, Tm, Hf & Crystallinity Kinetics
Differential scanning calorimetry heat flow thermograms, Tg midpoint inflection, Tm melting endotherm, Hf enthalpy integration, and percent crystallinity calculations.
Heat Deflection Temperature (HDT) and Vicat Softening Point Testing
Thermal mechanical testing, Heat Deflection Temperature (HDT under 0.455 MPa and 1.82 MPa flexural load, ISO 75), Vicat Softening Temperature (10 N and 50 N needle penetration, ISO 306), and structural implications.
Dynamic Mechanical Analysis (DMA): Storage Modulus E', Loss Modulus E'' & Tan Delta
Temperature and frequency dependent viscoelastic spectra, storage modulus E', loss modulus E'', loss factor tan delta, and dynamic glass transition kinetics.
Melt Flow Index (MFI / MFR): Testing, Significance & Standards (ISO 1133 / ASTM D1238 / IS 2530)
Understand Melt Flow Index — the single most important quality control test in Indian polymer processing — how to measure it, what it tells you, and how Indian manufacturers use it.
Tensile Properties & Mechanical Testing (ASTM D638 vs ISO 527)
Learn the two foundational mechanical tests every polymer engineer must master — tensile testing for stress-strain behavior and flexural testing for bending stiffness — including standard procedures and how to read the resulting curves.
Impact Testing: Izod vs Charpy Pendulum Dynamics & Fracture Mechanics
Understand how impact resistance — a property tensile testing cannot measure — is quantified using Izod and Charpy pendulum tests, and why this single property often determines real-world product failure.
Thermal Analysis: DSC, TGA & HDT — Theory, Technique & Industrial Interpretation
Master the three core thermal characterization techniques used to understand how polymers respond to heat — Differential Scanning Calorimetry, Thermogravimetric Analysis, and Heat Deflection Temperature testing.
Hardness Testing: Shore A & Shore D Durometer Mechanics & Viscoelastic Dwell Kinetics
Learn how hardness testing quantifies a material's resistance to indentation, the difference between Shore A and Shore D scales, and why hardness is one of the fastest, most accessible quality control tests in the polymer industry.
Rheological Testing: MFR/MVR Limitations vs Rotational & Capillary Rheometry
Go beyond basic MFI testing to understand rotational and capillary rheometry — the advanced techniques used to characterize how polymer melts behave across the full range of shear rates encountered in real processing.
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