Hydrogels for Biomedical Applications

CPG scientists have invented injectable hydrogels for in vivo use. The hydrogels have tunable mechanical properties, and yield no toxic by-products. This patent pending technology is being developed for applications including nucleus pulposus replacement in the spine, articular joint therapies, and tissue bulking.

A word about Silly Putty®

Why does Silly Putty® have both liquid and solid-like properties? Download our application note to learn more about the rheological properties of this material, and to see how it can be used to teach about the strain-rate dependence of polymers. This note will be updated with new data periodically, so visit often. Need to clean silly putty from your carpeting? Visit this site for tips on cleaning.

Modulated Differential Scanning Calorimetry

Cambridge Polymer Group offers modulated DSC (mDSC) in addition to conventional DSC. mDSC is useful to distinguish between reversible events, such as glass transitions and melting points, and non-reversible events, such as degradation, solvent loss, and curing processes. More information can be found on our chemical analysis page.

Swell Ratio Measurements

CPG's Swell Ratio Tester (SRT-1™) has been redesigned for easier use and better resolution. The SRT software (vs. 3.1) allows multiple temperature points, swelling or de-swelling measurements, and easy calibration. A

Cure of Adhesives

The curing kinetics of adhesives can be monitored with infra-red spectroscopy. Read about this approach in our Applications Notes.

Product Recalls

Our scientists have assisted several manufacturers of biomedical components with product recalls. We have helped to identify the conditions that lead the loss of product performance, and indicate changes in manufacturing or product enhancement that will prevent future failures. Our testing laboratories provide data necessary for FDA compliance and market re-entry.

Capillary Breakup Rheometry

Capillary breakup rheometry can be used to quantify the behavior of a polymeric solution, melt, ink, or food product when placed in an extensional flow. By monitoring the breakup kinetics of a stretched filament of fluid, one can calculate the extensional viscosity, surface tension, breakup time, and degree of elasticity. Cambridge Polymer Group received a Phase II SBIR from the NSF to continue development on their CaBER®. Go to the products section for more details, or download an application note.