Open the Calculator
Target Mโ, DP, or concentration across ATRP, RAFT, ROMP, and FRP, plus polyurethane and emulsion formulations, macroinitiators, and a block copolymer builder.
Search Polymers by Structure
Draw a repeat unit and match it against a 968-entry curated library, copolymer blocks included, or search by name, trade name, or CAS. Reads names off photos, labels, and PDFs too.
Build a Polymer Chain
An 8-bit maze game about the thing this whole site is for. Collect every monomer bead while O₂, an inhibitor and a chain transfer agent hunt your growing radical — and the real score is not points, it is your dispersity.
- 25 levels
- Polyethylene → carbyne
- Đ is the score
- Plays offline
Plan a polymerization
Copolymer Composition
Predict instantaneous copolymer composition from feed ratio and reactivity ratios, with a composition diagram and azeotrope detection.
Open the calculator →Dispersity (ฤ) Predictor
Predict the narrowest ฤ a RAFT, ATRP, or NMP reaction can reach from its target DP, conversion, and exchange chemistry, with a live molecular-weight distribution.
Predict a ฤ →Distribution Simulator
The whole molecular weight distribution, not just Đ: living chains, the dead-chain tail, and what your GPC’s band broadening would do to it.
Simulate a distribution →Tg Predictor
Estimate a random copolymer or miscible blend's glass transition temperature from its components using the Fox equation.
Predict a Tg →Chain Dimensions
Persistence length, Kuhn length, contour length and radius of gyration from a database of measured values, each quoted with the solvent it was measured in.
Size a chain →Flory–Huggins Phase Behaviour
Binodal, spinodal and critical point for a blend or a solution, the cloud point from χ(T), and the order–disorder transition of a diblock.
Will it mix? →Step-Growth & Gel Point
Degree of polymerization from conversion and stoichiometric imbalance, and when a multifunctional formulation gels — by both Carothers and Flory–Stockmayer.
Find the gel point →Crosslink Density
Mₛ from equilibrium swelling by Flory–Rehner, or from the rubbery plateau modulus, with the two routes compared and their disagreement explained.
Measure a network →Network Formation
Gel point, sol fraction and elastic strand density for any mix of functionalities and off-stoichiometry, by the Macosko–Miller recursive method.
Formulate a network →Free-Radical Kinetics
Rate of polymerization, kinetic chain length and DPₙ from the rate constants, plus chain transfer by Mayo and initiator half-life.
Run the numbers →Recipe Scaling
Scale any recipe up or down by a factor or between batch sizes while keeping every component's ratio the same.
Scale a recipe →Characterize what you made
Thermal Analysis: DSC, TGA & DMA
Interactive thermograms you reshape by heating rate, atmosphere, frequency, and crosslink density, from a 70-material library of thermoplastics, copolymers, elastomers, binders, and fillers.
Explore thermograms →Time–Temperature Superposition
Paste isothermal frequency sweeps and build a master curve: shift factors, WLF constants, and the activation energy that is not one.
Build a master curve →GPC Calibration Converter
Convert a polystyrene equivalent molecular weight from your GPC report into a true molecular weight for your actual polymer.
Convert a result →GPC Peak Interpretation
Columns, solvents, and shouldering, with an interactive chromatogram showing how integration limits move Mn, Mw, and ฤ.
Read a chromatogram →GPC Trace Analyzer
Paste the raw chromatogram and compute Mn, Mw, Mz and Đ yourself, with what the integration limits were worth shown beside the answer.
Analyze a trace →Bench guides & reference
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๐ฅ Hot Off the Press
Recent polymer papers from the past week, with any early citations surfaced first
๐ง Daily Polymer Trivia
One new chemistry question every day. You get three tries.