195
© Springer Nature Switzerland AG 2020
T. J. Gutiérrez (ed.), Reactive and Functional Polymers Volume One,
https://doi.org/10.1007/978-3-030-43403-8_9
Chapter 9
Lignin as a Coating and Curing Agent
on Biodegradable Epoxy Resins
Chikako Asada, Sholahuddin, and Yoshitoshi Nakamura
Abstract Epoxy resin has been widely used as a coating agent within the food,
aerospace, automotive, and electronics industries. However, these materials obtained
from petrochemical industry cause problems related to environmental impact. In
this sense, ecological epoxy resins from biodegradable natural polymers have been
proposed as an alternative. Lignin is a biodegradable polymer obtained from unused
plant biomass (agricultural waste or byproduct), and its use is less promising than
cellulose for the manufacture of bioethanol. This chapter aims to analyze recent
advances in studies of epoxy resin made from lignin.
Keywords Biopolymers · Films
9.1 Introduction
The epoxy resin is the important thermosetting resin in the industrial sector, being
used for many products such as coating agents for food and beverage cans, electronic and composite industries, automobiles as well as in the aerospace industry
because they have valuable properties, such as high thermal and chemical resistance, low moisture absorption and good electrical and mechanical properties (May
1988; Ellis 1993). Since epichlorohydrin (ECH) and bisphenol A are used as epoxy
resin raw materials derived from fossil resources, and considering that these substances are suspected of having an endocrine disruptive effect as well as other concerns such as carcinogenicity, mutagenicity and reprotoxicity (Markaverich et al.
1995). Therefore, the development of an alternative raw material to the epoxy resin
is desired as a coating material. To support the sustainable development goals
C. Asada (*) · Y. Nakamura (*)
Department of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
e-mail: asada.c@tokushima-u.ac.jp; ynakamu@tokushima-u.ac.jp
Sholahuddin
Graduated School of Life and Material System Engineering, Tokushima University,
Tokushima, Japan
© Springer Nature Switzerland AG 2020
T. J. Gutiérrez (ed.), Reactive and Functional Polymers Volume One,
https://doi.org/10.1007/978-3-030-43403-8_9
Chapter 9
Lignin as a Coating and Curing Agent
on Biodegradable Epoxy Resins
Chikako Asada, Sholahuddin, and Yoshitoshi Nakamura
Abstract Epoxy resin has been widely used as a coating agent within the food,
aerospace, automotive, and electronics industries. However, these materials obtained
from petrochemical industry cause problems related to environmental impact. In
this sense, ecological epoxy resins from biodegradable natural polymers have been
proposed as an alternative. Lignin is a biodegradable polymer obtained from unused
plant biomass (agricultural waste or byproduct), and its use is less promising than
cellulose for the manufacture of bioethanol. This chapter aims to analyze recent
advances in studies of epoxy resin made from lignin.
Keywords Biopolymers · Films
9.1 Introduction
The epoxy resin is the important thermosetting resin in the industrial sector, being
used for many products such as coating agents for food and beverage cans, electronic and composite industries, automobiles as well as in the aerospace industry
because they have valuable properties, such as high thermal and chemical resistance, low moisture absorption and good electrical and mechanical properties (May
1988; Ellis 1993). Since epichlorohydrin (ECH) and bisphenol A are used as epoxy
resin raw materials derived from fossil resources, and considering that these substances are suspected of having an endocrine disruptive effect as well as other concerns such as carcinogenicity, mutagenicity and reprotoxicity (Markaverich et al.
1995). Therefore, the development of an alternative raw material to the epoxy resin
is desired as a coating material. To support the sustainable development goals
C. Asada (*) · Y. Nakamura (*)
Department of Bioscience and Bioindustry, Tokushima University, Tokushima, Japan
e-mail: asada.c@tokushima-u.ac.jp; ynakamu@tokushima-u.ac.jp
Sholahuddin
Graduated School of Life and Material System Engineering, Tokushima University,
Tokushima, Japan