Services

Molecular weight distribution (gel permeation chromatography (GPC) with multiple detection)

Substituent distributions of cellulose derivatives

Hexenuronic acid content

Oxidized functional groups in relation to the molecular weight

Content of carbonyl and carboxyl groups in relation to the molecular weight distribution according to the CCOA and FDAM protocol, respectively

Group-selective fluorescence labeling in combination with multi-detector gel permeation chromatography (GPC with MALLS, RI, UV, fluorescence)

Isolation and identification of chromophores from cellulosic materials according to the CRI protocol

Identification by NMR, MS, comparison to authentic samples and comparison to a comprehensive chromophore database

Applicable to chromophores in the ppm to ppb range in pulps, paper, cellulosic fibers and cellulose derivatives

Analysis of the damage state of historical cellulosic objects (paper, manuscripts, garments, tapestry, books)

Visualization of oxidative damage (labeling combined with fluorescence scanning microscopy)

Chemistry of copper ink and gall ink corrosion

Chemistry of mass deacidification of books

Evaluation and assessment of conservational measures

NMR analysis of organic compounds (H, C, N, P) by modern 1D- and homonuclear/heteronuclear correlation 2D-NMR techniques

Liquid state (400 MHz / 300 MHz) and solid state (400 MHz) measurements

GC-MS analysis of complex mixtures

Sample preparation, extraction from natural sources, solid phase extraction (SPE) or solid phase micro extraction (SPME) for volatile compounds

Curie-point pyrolysis for non-volatile samples

Cellulose derivatives and products

Cellodextrins and cellulose model compounds

Vitamin E (tocopherol) derivatives and phenolic antioxidants

Isotopically labelled compounds (²H, ¹³C, ¹⁵N)

Lignin model compounds

Spin traps

We are currently offering gram amounts of BIMU-8 (CAS: 134296-40-5) Please contact Stefan Böhmdorfer for further details.