Copper Electroless Metallization of Cellulose Paper via Polydopamine Coating and Silver Catalyst.

Krzysztof Moraczewski,Rafał Malinowski,Andrzej Trafarski

doi:10.3390/ma14226862

Abstract

The paper presents the results of copper electroless metallization of cellulose paper with the use of a polydopamine coating and silver catalyst. The polydopamine coating was deposited via a simple dip method using a dopamine hydrochloride solution in 10 mM TRIS-HCl buffer with a pH of 8.5. The research showed that as a result of this process, cellulose fibers were covered with a homogeneous layer of polydopamine. The unique properties of the polydopamine coating allowed the reduction of silver ions from silver nitrate solution and the deposition of silver atoms on the paper surface. Deposited silver served as a catalyst in the autocatalytic electroless copper-plating process. The copper layer covered the entire surface of the paper sheet after 5 min of metallization, favorably affecting the electrical properties of this material by lowering the surface resistivity. The deposited copper layer was further characterized by good adhesive strength and high susceptibility to deformation.

Highlights

IntroductionCellulose is a well-known natural polymer that has many advantages such as: low price, renewability, ease of processing, biodegradability and good mechanical properties
The composition of the surface layer was mainly composed of carbon (C) and oxygen (O) atoms (Table 1) which corresponds to the composed of carbon (C) and oxygen (O) atoms (Table 1) which corresponds to the chemical chemical structure of cellulose
Thefirst firststage stagewas wasthe thedeposition depositionof ofaapolydopamine polydopaminecoating coatingon onthe required the paper, the first and most noticeable effect of which was a change in the paper, the first and most noticeable effect of which was a change in the appearance appearance the paper

Summary

Introduction

Cellulose is a well-known natural polymer that has many advantages such as: low price, renewability, ease of processing, biodegradability and good mechanical properties. Cellulose has no taste, is odorless, is hydrophilic, has a contact angle of 20–30 degrees, and is insoluble in water and most organic solvents [1]. Many properties of cellulose depend on its chain length or degree of polymerization, the number of glucose units that make up one polymer molecule. Cellulose from wood pulp has typical chain lengths between

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