The studies of physicochemical processes occurring during aging of the adhesive MUF resins

Available in ITD’s reading room.

Mariusz Jóźwiak
Poznań, Wydawnictwo Uniwersytetu Przyrodniczego w Poznaniu, 2011
ISSN 1896-1894

(Polish language version)

 

CONTENTS

List of abbreviations and definitions   5 
1. Introduction 8
2. Review of literature  11 
3. Aim and scope of the research  18 
4. Methodology and description of the research 21
    4.1. Assumptions 21 
    4.2. Synthesis of adhesive resins 21 
    4.3. Basic physicochemical properties 27 
    4.4. Physical and mechanical properties 27 
    4.5. The structure of liquid MUF resins  31 
          4.5.1. Introductory remarks 31 
          4.5.2. Microscopic observation 31 
          4.5.3. Research on particle distribution 33 
          4.5.4. Research on molecular structure 36 
    4.6. Characteristics of gelation and curing processes 39 
    4.7. Tests of the properties of the cured resins  40 
          4.7.1. Introductory remarks  40 
          4.7.2. The phase structure and thermal resistance of the cured resins  40 
          4.7.3. The surface properties of the resin monolayer  41 
    4.8. Test of physical and mechanical as well as hygienic properties of plywood  45 
          4.8.1. Introductory remarks   45 
          4.8.2. Preparation of experimental plywood  46 
          4.8.3. Tests of adhesive joints in the plywood  47 
5. Results 49
    5.1. Model resins and analysis of their technological properties 49
    5.2. Physical and mechalnical properties 59
          5.2.1. Rheological characteristics 59 
          5.2.2. Initial tack 73 
    5.3. The physical structure of the MUF resins 75 
    5.4. Molecular structure of the MUF resins 101 
          5.4.1. Analysis of the phase composition of liquid resins  101 
          5.4.2. GPC chromatography   103 
          5.4.3. MALDI-TOF mass spectroscopy  113 
          5.4.4. NMR spectroscopy 125 
    5.5. Characteristics of gelation and curing processes  141 
    5.6. Properties of the cured resins   146 
          5.6.1. Characteristics of thermal decomposition processes   146 
          5.6.2. Phase composition - the WAXS method  148 
          5.6.3. Surface properties - wettability  151 
          5.6.4. Surface properties - SEM and AFM microscopy  155 
    5.7. The plywood properties   161 
          5.7.1. Bonding quality  161 
          5.7.2. Formaldehyde  164 
          5.7.3. Volatile organic compounds  168 
6. Summary 177
7. Conclusions 186
8. Literature 189
Summary 205